Editing King K. Rool (SSBU)

:{{Cquote|King K. Rool Comes Aboard!|cite=Introduction tagline}}

'''King K. Rool''' ({{ja|キングクルール|Kingu Kurūru}}, ''King K. Rool'') is a playable character in ''[[Super Smash Bros. Ultimate]]''. He was announced as a newcomer during the August 8th, 2018 [[Nintendo Direct|Super Smash Bros. Ultimate Direct]] alongside {{SSBU|Simon}}, {{SSBU|Richter}}, {{SSBU|Chrom}}, and {{SSBU|Dark Samus}}. King K. Rool is classified as [[Fighter number|Fighter #67]].

Rather than being voiced by Toshihide Tsuchiya, who voiced the character in the 2007 title ''Donkey Kong Barrel Blast'' and the 2008 title ''Mario Super Sluggers'', both games for the [[Wii]], King K. Rool has a set of realistic crocodile roars and bellows, similar to how {{SSBU|Bowser}}, {{SSBU|Donkey Kong}}, and {{SSBU|Diddy Kong}} emit realistic animal sounds as opposed to having dedicated voice acting.

*Clear {{SSBU|Classic Mode}} with {{SSBU|Link}}, being the 1st character in his unlock tree.

King K. Rool is a character that ostensibly fits the mold of a super-[[heavyweight]], being the second-heaviest character in the game behind {{SSBU|Bowser}} and possessing a large array of powerful attacks with long range, but with below-average mobility; while his [[falling speed]] and [[gravity]] are noticeably above average, his [[traction]] and [[jump]]ing force are average at best, and he also has the 20th slowest [[air speed]], the 17th slowest [[walk|walking speed]], the 13th slowest [[dash|dashing speed]], and the 8th slowest [[air acceleration]] in the game. However, he has some characteristics that notably set him apart from his heavyweight peers; he has a wide variety of moves that serve multiple utilities, a great [[recovery]], and other valuable techniques that aid his playstyle, focusing on punishing mistakes and zoning against horizontal approach.

King K. Rool's greatest strength is the immense utility of his moveset. Though many of his attacks are typical of super-heavyweights, he also has attacks that lack brute strength (though most of them are still powerful) in exchange for unique attributes that contribute to his punish-focused playstyle. This is best shown through his character-specific perk, [[Belly Super Armor]]: attacks with this property gain short periods of this [[super armor]], which can block incoming attacks during their duration. This mechanic gives him an advantage that allows him to win more exchanges than he would normally. Additionally, it affects a large amount of his moves, granting more safety on moves such as his {{Mvsub|King K. Rool|SSBU|forward tilt}} and {{Mvsub|King K. Rool|SSBU|dash attack}} to break through projectiles or difficult to punish attacks. As a result, Belly Super Armor heavily helps his approach and defense.

Alongside the utility of his Belly Super Armor, King K. Rool has effective tools for ground offense. His {{Mvsub|King K. Rool|SSBU|neutral attack}} has good range and speed, making it reliable as a quick spacing option. It is also the most damaging non-rapid jab in the game, and leads into a tech situation at low to mid percentages. This is especially useful out of a [[foxtrot]], which is faster than his normal dash speed, making him about as fast as {{SSBU|Inkling}}. His tilts are very effective; for example, {{Mvsub|King K. Rool|SSBU|up tilt}} comes out very quickly, has decent knockback especially at the beginning, and has enough range to hit platforms above K. Rool. This can also be used to anti-air or prevent approaches from characters such as {{SSBU|Lucina}} and {{SSBU|Marth}}. It is also the most reliable move out of {{Mvsub|King K. Rool|SSBU|down throw}}, becoming a true combo from around 120% and scoring a [[KO]] on most characters. {{Mvsub|King K. Rool|SSBU|Down tilt}} can [[bury]] grounded opponents or KO airborne ones, making it a potent punishment option. It also works at the ledge as a ledgehang punish or 2-frame option, and has a large shockwave hitbox that notably extends its range. His earlier mentioned forward tilt grants him Belly Super Armor as early as frame 5, has excellent range, can be angled up or down (with latter capable of being used as a ledgehang punish or 2-frame option), and is a very strong kill move. Finally, his dash attack is also equipped with Belly Super Armor, has fast startup, a long-lasting, large hitbox and is very powerful, being a very potent, powerful burst option that can go through variety of attacks.

All of his [[smash attacks]] are incredibly powerful, and coupled with their unique traits and the belly armor on his up and down smashes, allow for very effective punishment. {{Mvsub|King K. Rool|SSBU|Forward smash}} deals heavy knockback regardless of where it hits, especially if angled upwards. It also confirms out of a down tilt bury at 70%, usually killing the opponent. {{Mvsub|King K. Rool|SSBU|Up smash}} functions as a quick anti-air, and it also has a small [[meteor smash]] hitbox in addition to a third hitbox that punishes grounded foes. However, only the first is really useful as the other two are weak. {{Mvsub|King K. Rool|SSBU|Down smash}} deals massive shield damage and lifts K. Rool's entire body off the stage from frame 4, allowing it to dodge most ground-hugging moves and makes it his best hard punish option. Overall, his smash attacks are all formidable for hard punishes.

His aerials are also fairly unique in their utility. {{Mvsub|King K. Rool|SSBU|Neutral aerial}} grants the longest duration of belly armor in K. Rool's moveset, making it a reliable combo-breaker or landing tool to prevent juggling. Neutral aerial also has very low landing lag, allowing it to combo into moves such as neutral attack, up tilt, or at higher percentages, dash grab and dash attack, the latter in particular being a KO confirm at certain percentages. The move's long-lasting, lingering hitbox and Belly Super Armor makes it a very effective edgeguarding tool, as it can go through a variety of recovery moves and gimp the opponent that way. His {{Mvsub|King K. Rool|SSBU|forward aerial}} is arguably his best move overall, being a cornerstone for his neutral game. It has amazing range, hits exceptionally hard, and because of its low landing lag, it is safe on shield and is his best combo starter at low percentages. This gives the move a ton of utility as a neutral spacing tool, kill move, combo starter, decent air-to-air option against some characters, as a decent although situational edgeguard option, for catching jumps and even as an occasional punish out of his burying moves. Forward aerial also deals non-[[tumble]] [[hitstun]] at 0%, confirming a grab. {{Mvsub|King K. Rool|SSBU|Up aerial}} is a very unorthodox move with a surprisingly high amount of utility - it has good start-up, a very long-lasting hitbox, and excellent kill power, while also working as a good platform movement out of a short hop. This is most effective when platforms are low, such as on {{SSBU|Battlefield}}; it can also be used as a situational third jump while recovering, stalling K. Rool in the air while allowing it to potentially cancel out projectiles thrown at him. Because of the Belly Super Armor, long-lasting hitbox and the fact that K. Rool does not perform the slight jump while in hitstun, it can be used as a situational combo breaker. {{Mvsub|King K. Rool|SSBU|Down aerial}} and {{Mvsub|King K. Rool|SSBU|back aerial}} are [[meteor smash]]es, with the former coming out relatively fast; and while the latter is very slow, it is also one of the strongest meteor smashes in the game. King K. Rool's back aerial also creates a wall of hitboxes behind him as a sourspot covers his entire arm. His up and down aerials utilize belly armor, but their utility is situational due to their hitboxes being separated from K. Rool's belly. His neutral, forward, and back aerials are also safe on shield, which is unusual for a super-heavyweight character. All in all, all of his aerials offer strong utility.

His [[special move]]s have a wide array of uses as well, with several efficient [[projectile]]s; the [[Blunderbuss]] is useful for edgeguarding purposes (such as forcing a situation where the opponent has to recover low, allowing for a down aerial) and throws out a Kannonball that can be sucked back in and aimed in a few directions. The Blunderbuss can also act as a command grab, sucking in opponents and shooting them out in different directions, with the forward reshoot in particular sporting very high knockback. The suction of the Blunderbuss is an effective ledge-trapping tool, especially on stages with platforms. Since K. Rool can drop through platforms while still being able to move slightly, he can limit the opponent's options to get out of the ledge. The vacuum animation can also be delayed and is very quick to come out if a Kannonball is in play, allowing K. Rool to easily mix up the timings. [[Crownerang]] is a very versatile tool that covers a large distance and grants him damage-based [[armor]] throughout the majority of its duration, and the late hit can set up combos or even straight up confirm kills into numerous moves. It has high priority that beats out most projectiles, and the armor allows K. Rool to tank numerous of attacks, making the move very threatening in some matchups. The pick-up animation also has some ways to be canceled, which can be adapted into the player's gameplan.

Furthermore, King K. Rool has immense survivability: between his extremely high weight, above-average falling speed, his Belly Super Armor on various moves and his heavy armor on Crownerang, King K. Rool has some of, if not the best longevity in the game; it is not uncommon for him to sustain more than 200% damage. Additionally, his up special move, [[Propellerpack]], goes a remarkable distance for a heavyweight and is infamously hard to intercept vertically due to its respectable disjointed hitbox. This can be used to poke opponents on the ledge, then jump up with a forward or up aerial to regain advantage. It can also situationally be used to catch opponents near the ceiling to steal a stock, most notably on high recovery routes.

K. Rool also has a very strong grab game, one of the best in the entire game in fact: his grabs have very long range and all have 3 active frames, and all of his throws are also very strong, heavily damaging and all of them have their utility. His {{Mvsub|King K. Rool|SSBU|up throw}} has him performing a jump and land over the highest platform over him. It is the most damaging throw in the entire game, dealing almost 20% if the 1v1 multiplier is enabled, making it a very effective damage racking tool. It also leaves the opponent in a juggling situation. While it also can KO at high percentages, it has overall mediocre KO potential, though with help of platforms it can KO much earlier. His {{Mvsub|King K. Rool|SSBU|back throw}} is a very strong throw with great KO potential near the ledge, which becomes even more potent with [[rage]]. It also sends the opponent in a very low angle, setting up for potentially deadly edgeguards even when it fails to KO. At higher percentages, his notorious {{Mvsub|King K. Rool|SSBU|down throw}} can lead into various mixups with tilts, up smash or aerials depending on mash speed. Most notably, he can create a 50/50 situation at around 80-100% with the throw - up smash covers mashing, allowing him to hit the opponent before they mash out and net a KO, or if they decide not to mash, forward smash will KO them. In addition to this, dash attack or up tilt are reliable options at higher percentages, allowing K. Rool to straight up KO with the throw starting from 120-140%. {{Mvsub|King K. Rool|SSBU|Forward throw}} does decent damage, can help put an opponent offstage and in a disadvantageous position, and lead into a dash attack for a true combo until around 20%. Once this is out of range, it is great for setting up edgeguards. With all of this, K. Rool is always able to do a lot of damage if he lands a grab, and is able to KO with his throws earlier than practically any character in the game to the point where he gets a huge chunk of his KOs with his grabs. All of this is made even more effective with his excellent grab range; combined with his effective initial dash, this can allow for a string of grabs that strongly deters shielding.

However, King K. Rool's numerous advantages are also met with several glaring and exploitable weaknesses. His below-average mobility spells trouble for him in certain matchups, and can make him easier to zone. Blunderbuss Kannonballs are slow to set up, and while they can occupy space well, fast characters can ignore it if they are already remotely close. Crownerang is also slow and can backfire very hard when missed, since the crown is a fairly powerful item that opponents can use to rack up damage very quickly. [[Gut Check]] is generally inferior to other counterattacks due to having a hitbox only on his stomach, while having significantly higher endlag than most reflectors (around 30 frames if it fails), making it unreliable. This endlag makes it almost meaningless against some projectiles, such as {{Mvsub|Mega Man|SSBU|neutral attack|poss=y}}.

K. Rool’s extreme weight, very large hurtbox, and above average falling speed make him extremely vulnerable to combos, and while his Belly Super Armor can help alleviate this, it's not completely foolproof: if K. Rool takes 36.02% of total damage to his armor over a short period of time, he will suffer a pseudo-[[shield break]] and be rendered immobile until his belly armor recovers. It also recovers at just .3% per second, making abuse quite difficult. Its limited HP punishes abuse of this mechanic if used frequently. Although it's hard to break in most matchups, it's certainly possible especially against other heavyweights with strong attacks, such as Bowser and {{SSBU|Ganondorf}}. However, its effectiveness varies depending on whether clashing against his attacks is actually worthwhile. Unlike Bowser's [[Tough Guy]] Armor, the HP system of Belly Armor makes it quite exploitable, since the advantage of ignoring quick attacks with no knockback offers better usage for up-and-personal brawlers like Bowser. As the second heaviest fighter in the game, K. Rool's Belly Amor can occasionally act as a liability for survival, forcing him to rely more on non-armored moves when it's about to break. Additionally, due to their brief duration, his belly armor attacks are more reliable on quick, single-hit moves than long, multi-hitting attacks.

While K. Rool's ground game is good and his grab and throw game are top notch, they too suffer from his balanced kit. None of his throws other than back throw have strong enough kill power to actually be reliable in a matchup, although they do fit other purposes. Additionally, his air game can overall be seen as mediocre. Although his aerials are generally very potent moves and have interesting attributes, including two meteor smashes and armor on some of them, all of these moves (apart from his neutral aerial) suffer from one fatal flaw—very high ending lag in the air—making many of them somewhat situational, and forcing K. Rool to land with the moves to minimize the ending lag in the air. His down aerial's meteor smash hitbox only lasts for two frames and the move itself has high ending lag, making the potential punishes off of it very situational. His up aerial has extreme ending lag (the highest of any aerial in the game), preventing King K. Rool from acting even after a jump (though platforms can alleviate this), making it somewhat risky to use high up in the air. While his back aerial is very strong and has a lingering hitbox, it has very high start-up lag, which makes it easy to stuff out especially with its lack of armor or intangibility, and it additionally has a very weak sourspot, making it somewhat inconsistent. Additionally, none of King K. Rool's aerials autocancel in a short hop. His forward and back aerials require a full hop double jump to autocancel, while up aerial does not autocancel without being very high up. The high ending lag of his aerials makes fast-falling them offstage extremely risky, as it is possible to self-destruct before even getting a chance to recover, which depletes edgeguarding options. Due to the high overall lag of his aerials, K. Rool is unable to juggle for extended periods of time, and his aerial game is mostly constrained to a reactive playstyle. K. Rool's slow aerial mobility further hampers his aerial capacity, and his massive hurtbox makes him a very easy target if in the air, giving him a limited air game, making his playstyle generally more grounded.

Though a lot of his moves have decent start-up, especially for a super-heavyweight, an equal amount of them suffer from very high ending lag, which means that King K. Rool gets easily punished if he fails to connect his attacks. Despite the wide array of tools he has at his disposal, he lacks many moves that can simply be thrown out quickly, as many of his attacks are punishable or force him to use up his belly armor. This ironically makes his [[approach]] ineffective despite the sheer amount of different, fast attacks he has; few of his attacks can maintain pressure without being exploited, and the lag can make moves like forward tilt a neutral reset at best. King K. Rool is also vulnerable to being pressured and rushed down due to a poor out-of-shield game; his up smash is hard to use out of shield in most matchups, as the headbutt (which comes out on frame 6) only hits directly above him, while then later plank hitboxes are weak and slow to come out. His neutral aerial, his fastest reliable out-of-shield option, has poor range, especially behind him. As a result, K. Rool is particularly vulnerable to characters that can crossup his shield easily, since he effectively has no option to punish this kind of approach and has to resort to retreating or jumping away. Finally, even his amazing grab game has some flaws—his forward throw is unable to KO at realistic percentages, his up throw requires platforms to KO effectively and is too laggy to have true followups, his back throw loses a lot of its kill power if used center-stage due to its low knockback growth, and while his down throw gives him extensive mixups and even KO confirms, it requires reads to be effective. It is also affected by the [[bounce glitch]], which adds even more inconsistency to the move.

[[Crownerang]], while a very strong move on its own, is flawed in many ways. If an opponent picks up the crown after it has been thrown, it leaves him without one of his best tools. The crown can actually be used to edgeguard against [[Propellerpack]], or it can be thrown up to keep it from respawning. It's also very possible for opponents to combo with the crown, or pick it up again after throwing it, with very little counterplay available. The player must adopt an entirely different playstyle while the crown is on the field, or else risk losing a stock. As the pick-up animation takes 17 frames to complete, this also means that it can interrupt crucial combos, leading to the opponent getting away and resetting to neutral. While this is alleviated slightly through tech, it doesn't help a lot.

King K. Rool's recovery, while effective in theory, is very exploitable by many characters. Propellerpack is very linear, and a knowledgeable player can edgeguard him for long periods of time. It is immensely slow, and moving around with it reduces the vertical speed and leaves strong momentum, which can lead to a self-destruct if not accounted for. The hitbox doesn't entirely cover him horizontally, and as he cannot cancel the animation, he has to commit to it. He is usually forced to recover low, which is extremely dangerous due to how many characters have their own unique ways to beat him here. Characters such as {{SSBU|Piranha Plant}} and {{SSBU|Villager}} have moves ([[Ptooie]] and {{Mvsub|Villager|SSBU|forward smash}} respectively in this case) that can also counteract the vertical hitbox. It also leaves him very vulnerable to [[stage spike]]s, though [[LSI]] greatly alleviates this and allows him to [[tech]] to unreasonable percentages. The move can be angled to try and prevent this, though K. Rool usually will not recover without taking a large amount of damage. K. Rool also has very few ledge options; his only unique one is [[forward aerial]], which requires frame-perfect precision to ledgesnap. Other than this, his ledge options are very limited—even Crownerang is too laggy to be used from the ledge reliably—and thus many characters can keep him there for a long time before finally killing him.

All in all, King K. Rool has a somewhat hard time compensating his heavy drawbacks, even though his strengths are also very potent. King K. Rool is an extremely resilient character that excels at keeping opponents out while punishing mistakes extremely hard. He enjoys playing a unique bait-and-switch playstyle, being a zoner that can switch to aggression whenever there is an opening and net a substantial punish. His damage output cannot be understated, with him often either getting a stock or leaving an opponent at kill percent. This ability to force reactions from his foe makes him unlike any other character in the cast, and creativity rewards the player with a decently versatile character. However, just like how he capitalizes heavily on mistakes and confusion, his own openings can be heavily punished as well, requiring him to play patiently. To use the full potential of his moveset, the player needs to balance their gameplay between zoning and up and personal aggression. For while K. Rool does have the advantage of switching between safe distancing via Crownerang and the Blunderbuss or pressuring lighter characters with his strong melee attacks, he does not perform well enough to use one strategy alone.

Historically, K. Rool's competitive reception has generally been very negative, though it has somewhat fluctuated over time. Early on considered to be a potential high/top-tier character and "broken" especially by casual players, it did not take too long for many top professionals to consider King K. Rool as one of the worst characters in the game due to his severe, heavily exploitable downsides. In Japan, his reputation was even worse, with many top professional players there universally ranking him as the single worst character in the game. This is reflected in his tournament results, as they are very limited in North America and Japan (in latter, practically completely nonexistent outside of online tournaments), especially on the national level. However, thanks to dedicated players like {{Sm|Ben Gold}} and {{Sm|Raphy}}, K. Rool's results in Australia and Europe respectively are significantly better. Ben Gold in particular managed to win {{Trn|Battle Arena Melbourne 11}}, the biggest ''Ultimate'' major so far in Australia. Although his competitive viability still remains questionable and many players still view him as a low or even bottom-tier character, the changes he received in the patches, especially the most recent ones in 13.0.0, have made a lot of top professional players question whether K. Rool really is as bad as previously thought. Some of them even believe that he might be a mid-tier character instead of a low or bottom tier character as previously thought. However, how much these buffs have actually affected his viability remains to be seen.

Aside from bug fixes and nerfs early-on, King K. Rool is among the most-buffed characters in ''Ultimate''. In response to his early-game perceptions, 2.0.0 shortened [[Blunderbuss]]' vacuum duration and decreased the horizontal range of [[Propellerpack]]'s hitbox, the latter of which would previously hit opponents on the edge from noticeably far away. The most notable change, however, was to down throw: its [[bury]] duration's scaling was changed to be less effective at low percents, but more effective at high percents. While the former two are direct nerfs, they did not significantly impact his playstyle. While originally considered to be a significant nerf, King K. Rool proved to benefit from the change to his down throw, as the popularization of forward throw → dash attack made the early percentage usage obsolete, and the higher scaling allowed for down throw → up tilt to be a reliable kill confirm from around 130%.   

After his metagame relevance dropped, outside of a nerf to [[Crownerang]]'s shield damage, King K. Rool received his first buffs in 3.0.0 and 3.1.0. The most notable among these was the lag reduction to up aerial, making it far more reliable for recovery, acting as a pseudo-double jump. Forward aerial's hitbox priority would also be tweaked, making the higher-damage hitboxes connect reliably and thus drastically improve K. Rool's combo game. This would be the first of numerous buffs to the move, which would turn it from a mediocre move to among the best in K. Rool's kit.

6.0.0 would rework [[Blunderbuss]], reducing its lag and increasing the KO power of Kannonballs. A new searchbox would be added specifically for inhaling Kannonballs, drastically improving the consistency of reshooting them and making it reliable off-stage. K. Rool's aerials all received significant improvements as well; neutral aerial's landing lag was reduced to 9, allowing dash to be buffered consistently and making it easy to combo from, forward aerial's damage was buffed to the point it's -5 on shield, and up aerial's hitbox activity and KO potential was monumentally improved. These changes, coupled with continued tweaks to [[Gut Check]], revolutionized K. Rool's game plan and gave him some much-needed identity.

After a minor buff to his shield, updates continued to bless K. Rool in 8.0.0, most notably his armor. [[Belly Super Armor]] and Crownerang both received threshold increases, allowing him to force his way through many situations, notably improving his disadvantage state. Crownerang's buff was of particular note, significantly improving its utility in numerous game states, saving him from ledgetraps, juggling, or edge-guard situations. Back throw and up smash's changes improved his ability to KO from stray hits as well, with back throw in particular even [[gimp]]ing opponents on its own due to the new [[knockback]] angle, making it an option to respect when ledgetrapping K. Rool.

After many {{SSBU|Steve}}-related bugs being fixed, K. Rool's KO potential was amped up even more. Up throw received a knockback growth buff that put it on-par with {{SSBU|Mewtwo}}'s which, considering its ability to take K. Rool to higher platforms, made it significantly more imposing. Up tilt's damage received a buff that made it more reliable out of down throw, previously being middling and mostly outclassed by dash attack, which is 3 frames slower. Finally, forward smash gained slightly more range and an extra active frame, now being slightly easier to land and hitting ledgehanging opponents more reliably.

Overall, King K. Rool has been buffed in all areas: his [[neutral game]] has been drastically improved, he has far more reliable KO options, and his disadvantage state has been considerably reworked. Numerous top professionals, such as {{Sm|Raito}}, {{Sm|MVD}}, {{Sm|ESAM}}, and {{Sm|Dabuz}}, have acknowledged his significant turnaround, which reflects in his tournament results; in part thanks to these patches, players such as {{Sm|Ben Gold}}, {{Sm|KirbyKid}}, and {{Sm|Raphy}} have achieved considerable success.

[[File:KingkrooldthrowSSBUgraph.png|thumb|300px|right|A graph demonstrating the differences in the burial duration's scaling between King K. Rool's down throw pre-update (blue) and post-update (red).]]

[[File:Blunderbuss_(Kannonball_Range).gif|thumb|right|200px|Blunderbuss' updated vacuum searchbox for Kannonballs in update 6.0.0. Once the vacuum is completely stretched out, it remains as such until Blunderbuss is put away.]]

|neutraldesc=A three-hit combo consisting of a palm thrust (comes out on frame 3), a claw swipe (frame 4), and a front kick (frame 5). The first hit can be repeated by holding the attack button, and can also [[jab reset]] on big body characters specifically, allowing for some interesting situations. The second hit resembles King K. Rool's standard attack from ''{{iw|mariowiki|Donkey Kong Barrel Blast}}''.

|ftiltdmg=11% (arms), 13% (palms)

|ftiltdesc=Rears back and performs a forceful clap, similar to his arch-nemesis {{SSBU|Donkey Kong}}'s forward smash. Gains [[Belly Super Armor]] when he rears back to clap, making it a highly effective approach option with pivot canceling. Sends at a [[semi-spike]] angle and is decently fast for its power (comes out on frame 12), KOing at 107% at the edge of [[Final Destination]]. It can be angled up and down, making it a decent anti-air tool when angled up, and it is capable of hitting the ledge when angled down. This move has impressive range due to a massive, disjointed hitbox surrounding K. Rool's hands. It does suffer from moderately high ending lag, though this flaw can be partially mitigated when spaced correctly. The combination of its range, Belly Super Armor, KO potential, and ability to angle it up or down makes it not only one of the best moves in King K. Rool's kit, but also arguably one of the best forward tilts in the game.

|utiltdesc=An uppercut. Has a wide hitbox, covering the front of K. Rool, and starts low enough to reach prone enemies. Almost as fast as his neutral attack, coming out on frame 5, which is very fast for a move with reasonably decent KO power. Has intangibility on the arm during its duration, effectively making the move slightly disjointed. Loses power the longer it is out, with the sweetspot dealing rather strong diagonal knockback, and the sourspot dealing weak, mostly vertical knockback, which can potentially lead to another up tilt or up air. This move works well out of [[down throw]] due to its combination of speed and power.

|dtiltdesc=A delayed sumo-esque stomp. K. Rool's foot [[bury|buries]] grounded opponents, though it cannot do damage to an already-buried enemy. Much stronger on aerial opponents, and can KO at 104% at the edge of Final Destination. The stomp causes a shockwave near his foot. This deals weak vertical knockback to nearby opponents and allows for moves like [[forward aerial]] to be used out of it. Starts with the non-bury hitbox on frame 13, before the bury comes out at frame 14. [[Forward smash]] is true out of this from around 70%, and frequently KOs at that percent range. The hitboxes can hit some opponents under low platforms (such as the left and right platforms on {{SSBU|Battlefield}}). Due to how buries work in ''Ultimate'', it is possible to "store" knockback on a buried opponent using a weak attack, forcing them to get unburied over time and sent at the angle of the weak attack; this can create long combo strings at low percents.

|dashdesc=A [[wikipedia:Professional wrestling strikes#Body avalanche|body avalanche]], similar to an attack he used in ''{{iw|mariowiki|Donkey Kong Land}}''. It covers a good distance and has incredibly fast start-up for its power (comes out on frame 7), but has very high ending lag. It also deals much less damage later into the attack. Has Belly Super Armor and can KO, allowing it to tank opposing hits (especially projectiles) as a risky [[approach]]. KOs at 102% at the edge of Final Destination, making it a very good move to use out of [[down throw]] through [https://www.youtube.com/watch?v=7-mWaJuVdlo Instant Dash Attack], as it KOs larger characters earlier than forward tilt.

|fsmashupdmg={{ChargedSmashDmgSSBU|19.9}} (sweetspot), {{ChargedSmashDmgSSBU|17.3}} (close)

|fsmashdowndmg= {{ChargedSmashDmgSSBU|19.5}} (sweetspot), {{ChargedSmashDmgSSBU|16.9}} (close)

|fsmashdesc=Dons a boxing glove, referencing his "King Krusha K. Rool" persona from ''Donkey Kong 64'', and throws a straight punch. This move has a sweetspot on the glove and a sourspot on K. Rool's arm. It can also be angled and deals more damage if angled up or down, which gives it some versatility, depending on the angle. Although the move is slightly faster than forward smashes of other super heavyweights, it still comes out slow with a short-lasting hitbox (frame 19-21), and it suffers from extremely high ending lag even for its type, making it very punishable when missed. However, the move is very powerful, with the sweetspot KOing at 53% at the edge of Final Destination. The sourspot on his arm deals less knockback and damage but is still moderately powerful. The boxing glove is also disjointed, which can be used to hard punish short hop approaches in niche circumstances. It's also very effective out of down tilt, as the move is fast enough to connect and KO at around 50-70% before the opponent mashes out.

|usmashdesc=An upward [[wikipedia:Professional wrestling strikes#Battering ram|battering ram]] followed by a comical plank. The headbutt has a small hitbox, but has fast start-up (frame 6) and can KO from medium to high percents. It also has a slightly later hitbox on frame 10 that deals slightly less damage, making it somewhat inconsistent at times. The initial headbutt can be used to hit opponents on platforms above him, or as a risky anti-air move. It is King K. Rool's fastest out of shield option, though it is too situational and risky to be very effective for this purpose. It is also highly effective out of down throw, as it is able to hit opponents who mash out, being an effective KO confirm at around 90-110%. The plank comes out later and has a big hitbox, but deals less damage and knockback, making it more suited for covering the headbutt or ledgetrapping at best. The plank animation weakly [[meteor smash]]es opponents, though this is ineffective for edgeguarding due to its low knockback. In addition, it is the weakest meteor smash in the game, failing to KO at realistic percents. It can be used to force tech situations or awkward placements off-stage, but these are highly situational and impractical. The sheer number of hits do make it useful for causing shield damage under platforms. Each hitbox is situated on K. Rool's head and body respectively, meaning it can miss entirely if used poorly. Additionally, the move has extremely high ending lag, with the first actionable frame being 72 and the last hit being on frame 23. The headbutt KO's at 100%, while the plank KO's at 162% at the edge of Final Destination, respectively. This move has Belly Super Armor shortly after K. Rool hops and before he flops onto the ground. There are intangibility frames on K. Rool's head when the sweetspot comes out.

|dsmashdesc=A [[wikipedia:Professional wrestling strikes#Big splash|jumping splash]], which causes a quake. Has Belly Super Armor during the leap, and deals heavy shield damage. As K. Rool physically leaves the ground when using the move, his hurtbox gets shifted into the air, allowing it to dodge ground or belly-level attacks to deal a hard punish. It is extremely powerful, being one of the strongest down smashes in the game, KOing at 50% at the edge of Final Destination. The move is very laggy overall, with its strongest hitbox coming out on frame 22, and it also suffers from very high ending lag, which makes it very punishable if used poorly. However, thanks to its initial hop and armor, the move is surprisingly hard to intercept despite its high startup. It also can be used on platforms against opponents that try to attack K. Rool from below. The quake is extremely weak, but it covers the high ending lag of the move somewhat, and it can occasionally lead to a forward tilt.

|nairdesc=A [[wikipedia:Professional wrestling aerial techniques#Diving splash|splash]], similar to an attack he used in ''Donkey Kong Land''. Decently fast (comes out on frame 7), acts as a [[sex kick]] and has Belly Super Armor. In addition, it has very little lag in comparison to most of King K. Rool's moveset, and is his safest move on shield. Finally, it is also his fastest out-of-shield option that is somewhat practical, next to his neutral attack. Because of all of this, it is one of the safest and most versatile moves to use in K. Rool's kit. It can be used for landing, contesting aerials, approaching, and even gimping, as it beats out most recovery moves, even ones with hitboxes. In addition, due to its safety, it can be used to pressure, and it can also combo into several moves, such as his neutral attack, up tilt, forward tilt, dash attack, grab, and even situationally into down tilt, which can lead to devastating early KOs.

|fairdesc= A dropkick, similar to {{SSBU|Bowser}}'s back aerial. Hitbox comes out on frame 11. Its sweetspot is at K. Rool's feet, which has a higher priority over the sourspot, making it easy to land. Has a very large hitbox with sweetspot being notably disjointed, giving it a very good range. The sweetspot has strong knockback, KOing around 100% near the edge of Final Destination. It deals disproportionately high damage, making it an very efficient damage racking tool. The move also acts as a sex kick, allowing it to be used for approaching or as a situational edgeguarding option. However, the move has relatively low landing lag, considering its power, huge, lingering hitbox, and relatively decent startup of 11 frames. This low landing lag combined with its power and range makes it K. Rool's safest move in neutral when the move is being used while landing, being safe on shield, especially when spaced correctly. Its properties make it K. Rool's best combo starter at low percents, with sweetspot being able to lead into neutral attack, forward tilt, up tilt, dash attack and grab at low percents. It can even confirm down tilt thanks to it being +15 on hit with a good landing at 0%. The sourspot on this move lies around the torso and can be used well with down tilt. It has a late hitbox with drastically weaker damage and knockback, which has some niche combo utility at mid percents, being able to lead into grabs thanks to it not sending into [[tumble]] until around 65%. However, it is very hard to land consistently. Overall, the move is considered to be among the best and most versatile moves in K. Rool's moveset.

|bairdesc=Turns around and throws a delayed {{iw|wikipedia|overhand punch}} behind himself, similar to {{SSBU|Mario}}'s forward aerial. It is very slow (comes out on frame 18), but it powerfully meteor smashes opponents if K. Rool's fist hits. Against grounded opponents, it launches them diagonally with extremely high knockback, being able to KO middleweights at 65% near the ledge, making it one of the strongest aerial attacks in the entire game. The larger, disjointed sourspot around the fist is significantly weaker, dealing rather weak diagonal knockback against both grounded and airborne opponents, failing to KO reliably until 160%. It also has a slightly lingering hitbox, making it an important tool in neutral when full hopped.

|uairdesc=An upward battering ram. It Causes K. Rool to float slightly, giving it more reach. It has extremely high ending lag, preventing K. Rool from acting even if performed out of a double jump, making it risky to use offstage and making it the laggiest aerial in the game. However, is one of K. Rool's fastest aerial attacks (comes out on frame 7), and deals less damage if hit later. In addition to this, the early hitbox is among the strongest up aerials in the game, being able to KO at around 100% and even earlier if used near the upper blast zone, giving K. Rool a possibility to pick up very early KOs with the move, especially with rage. The early hit has a large, disjointed hitbox much larger than K. Rool's head, which also lingers for a disproportionately long time. The move has Belly Super Armor while K. Rool stretches his head out, ending after the hitboxes are over. When short-hopped, this move can allow K. Rool to move onto a platform, allowing for some movement options, and significantly helps with the issue of the move having high endlag. Like up smash, there are intangibility frames on K. Rool's head during the attack, making it disjointed and allowing it to beat projectiles or some other even reasonably disjointed moves, such as {{SSBU|Mr. Game & Watch}}'s down aerial. This move can also be used for recovering from high to mid-levels, as K. Rool can be moved from side to side while using the move. <!--K. Rool's crown does not increase this move's damage, this has been tested. Remember that short hop attacks have a damage penalty in ''Ultimate''.-->

|dairname=Meteor Stamp ({{ja|メテオスタンプ|Meteo Sutanpu}})

|dairdesc=Does a quick flip before performing a [[wikipedia:Professional wrestling strikes#Double foot stomp|double foot stomp]] in a Superman pose. The hitbox is situated on K. Rool's legs. Decently fast (comes out on frame 14) and meteor smashes if the early hitbox connects, although the meteor smash itself is rather weak. If the opponent is hit by the early hitbox - but not meteor smashed - on-stage by this move, it confirms a wide variety of attacks. There is also a late hitbox with a sweetspot on the hip, with 20 extra stats in knockback growth, plus a sourspot on the feet. It also has Belly Super Armor after K. Rool stretches his feet out, giving it some safety.

|grabdesc=Reaches out quickly with great range. However, his dash and pivot grabs are slower than his standing grab. If K. Rool misses, his left eye comically bulges in frustration.

|pummeldesc=Headbutts the opponent.

|fthrowdesc=Lifts the opponent over his head before slamming them into the ground, sending the opponent flying forwards. The slam possesses a collateral hitbox that can affect nearby opponents. Decent knockback. This combos into dash attack or a dash into neutral attack at 0%. It also has non-[[tumble]] hitstun at that point, making the combos extremely consistent.

|bthrowdesc=Pins the opponent to the ground and drags them backward before flinging them behind himself. KOs at 124% at the edge of Final Destination, though [[Rage]] greatly assists its KO power.

|uthrowdesc=Heaves the opponent over his head leaps high into the air, and then descends to perform an {{h2|wikipedia:Backbreaker|Argentine backbreaker rack}} [[wikipedia:Backbreaker#Backbreaker drop|drop]]. This is the most damaging throw in the entire game and KOs around 160%. Stages with low upper blast lines and/or high platforms KO even earlier, as it carries opponents upward in a similar fashion to {{SSBU|Kirby}}, {{SSBU|Meta Knight}}, and {{SSBU|Charizard}}'s up throws.

|dthrowdesc=A {{iw|wikipedia|powerbomb}}. Has the lowest damage output of K. Rool's throws, but this is compensated by its burial ability granting it follow-up potential. K. Rool's most versatile throw overall, as well as one of his most versatile tools in general. Down throw follows up to numerous moves depending on the opponent's percent, including jab, up tilt, and up air at lower to mid percents, as well as forward tilt, forward, and down smash at higher percents. It is also possible to infinite many fighters by throwing them, using jab while they're buried, and re-grabbing them when they are released. However, most followups can be avoided if the opponent mashes out (especially since the throw itself is slow and gives plenty of time to react), making its KO setups unreliable at much higher percents. Only dash attack, forward and up tilts are able to follow up at 125% and KO reliably. However, up smash and up aerial can be used to discourage mashing and create 50/50 situations at lower percents, as the prior KOs at 100% a lot of the time.

|nsdesc=Pulls out a {{s|wikipedia|blunderbuss}} and fires a {{s|mariowiki|Kannonball}} forward, while donning the pirate hat worn by his alter-ego "{{s|mariowiki|Kaptain K. Rool}}" in ''{{s|mariowiki|Donkey Kong Country 2: Diddy's Kong Quest}}''. Only one Kannonball can be in play at one time, with another being usable after around 2.5 seconds. After a Kannonball is fired, the special button can be held to use the blunderbuss's vacuum function, sucking in nearby enemies or the Kannonball itself (though the move will eventually cancel after several seconds), similarly to [[Inhale]]. K. Rool can drop through soft platforms while vacuuming with his blunderbuss, and he also can move left and right as well while airborne, which is very useful for ledgetrapping. Once it sucks something in, K. Rool will immediately launch it out at a slight angle upward in front or behind him, or directly upwards, depending on the held direction. The blunderbuss "throw" KOs at 100% near the edge of Final Destination, though it deals lower knockback upwards or if reversed. A launched fighter or re-launched Kannonball is capable of KOing as early as 70%, with the Kannonball lingering while doing minor damage after the first hit.

|ssdesc=Takes off his crown and flings it forward in a style based on his boss battle in ''{{s|mariowiki|Donkey Kong Country}}''. Functions similarly to [[Boomerang]]. Has 12% damage-based [[armor]] while K. Rool is throwing his crown. Deals less damage when returning. Unlike Boomerang, it cannot be smash thrown. The crown will attempt to return to K. Rool while flying, though it will slowly lose altitude. Only one crown can be thrown at once. If K. Rool fails to catch it, the crown will drop as an item for anyone else to use, and will reappear on his head after 12 seconds or if K. Rool touches it again (does not count if the crown hits him as a thrown item, or if the crown is from another K. Rool). The pickup animation can be [[Crown canceling|canceled]] through using a move or "unavoidable" animations such as jumpsquat when coming into contact. It also has a number of advanced techniques, such as [[Crown sliding]].

|usdesc=Equips the Propellerpack worn by his alter-ego "{{s|mariowiki|Baron K. Roolenstein}}" in ''{{s|mariowiki|Donkey Kong Country 3: Dixie Kong's Double Trouble}}'', and flies upward. Covers an excellent amount of distance, allowing K. Rool to fly from one end of Final Destination to the other, though changing direction is difficult. Upon reaching peak height for a moment, K. Rool will slowly drift down while flapping his arms as a direct reference to his damaged state during his boss battle in ''Donkey Kong Country 3: Dixie Kong's Double Trouble''. Pressing down will render K. Rool [[helpless]], make him fall faster, and lower his landing lag. The propellers above K. Rool deal multiple weak hits, protecting him from edgeguards while even allowing him to drag opponents to the top blast line, though this can be [[DI]]'d out of if it hits more than 3 times.

|dsdmg= 1.5× (sweetspot), 1.05× (sourspot), 1.5× (reflected projectiles)

|dsdesc=Puffs out his stomach and retaliates against attacks. It works like a [[counterattack]] and can also [[reflect]] [[projectile]]s. However, the counter hitbox is centered on K.Rool's stomach, making the rest of his body vulnerable (most notably his face), much like the ''Melee'' and ''Brawl'' versions of [[Toad]]. Its sweetspot has a damage multiplier of 1.5×, tying it with [[Slip Counter]] and [[Counter Throw]] for the second-highest damage multiplier out of any counterattack in ''Ultimate'', surpassed only by [[Tetrakarn]]. When reflecting, the stomach has a lingering hitbox that also scales with damage. This can make it KO at very low percentages using moves like [[Charge Shot]] to boost damage. This is usually seen when projectiles are reflected from close range.

|fsdmg=3% (stomp), 10% (tackle), 25% (laser), 10% (ending)

|fsdesc=K. Rool stomps, stunning any nearby opponents and lunges forward while catching those in his path. If at least one opponent was caught, a cutscene plays in which K. Rool sits on his throne on {{iw|mariowiki|Crocodile Isle|Donkey Kong 64}} before firing a massive laser from his {{iw|mariowiki|Blast-o-Matic}} cannon. The laser then fires through {{iw|mariowiki|Donkey Kong Island}}, destroying the island and dealing massive damage on the victims.

*Drops from the sky with his arms crossed before chuckling. His pose is based on how he appears in ''{{s|mariowiki|Donkey Konga}}'', while him falling from the sky is a reference to ''Donkey Kong Country.''

*'''Up taunt''': Viciously bites forward four times.

*'''Side taunt''': Slaps his belly once in amusement. Amusingly, this taunt also uses K. Rool's Belly Super Armor during the frames before he slaps his belly.

*'''Down taunt''': Does a sumo-esque stomp.

*Slaps his belly twice and gloats happily.

SSBUKingKRoolIdle1.gif|King K. Rool's first idle pose

SSBUKingKRoolIdle2.gif|King K. Rool's second idle pose

|Krem - ling Krew! || (high voices) Kin - gu! (low voices) Kuru - ru! || King - K. - Rool! || Ro - oo! King - K! ||

[[File:KRoolVictoryThemeUltimate.ogg|thumb|A flourished orchestration of the first few bars of "Gang-Plank Galleon", his boss theme from the original ''{{s|mariowiki|Donkey Kong Country}}''.]]

==In competitive play==

Upon ''Ultimate's'' release, many players noted King K. Rool's numerous strengths that were never seen before on a super-heavyweight character, namely his two projectiles, unique [[Belly Super Armor]] mechanic, a down throw that — in theory — leads to very early kill confirms, good startup on many moves, and a very long-ranged recovery. This, in addition to his other strengths more typical to his weight class, caused the majority of top professionals to consider King K. Rool a potential high or even top tier character on release, while also getting a notorious reputation of being "broken" among less experienced players. In the first few weeks of the game's release, King K. Rool picked up multiple strong early tournament results, primarily in the US, such as {{Sm|Vikerkaar}}'s 9th placing at {{Trn|Don't Park on the Grass 2018}}, {{Sm|Ito}}'s 13th placing at {{Trn|Super Splat Bros}}, and {{Sm|WAR}}'s 4th placing at {{Trn|Poi Poundaz 2}}.  

However, it quickly became apparent that King K. Rool wasn't nearly as good as players thought, as he has some of the nastiest downsides in the game to counter his strengths. This includes a gigantic hurtbox, a flawed disadvantage state, and high endlag on his moves to offset their "unchallengeable" startup. He also has various exploitable mechanics on many of his strengths, such as his extremely slow and predictable recovery, laggy projectiles, and Belly Super Armor being breakable. His down throw is also easy to mash out until higher percents, rendering seemingly "broken" kill confirms not true until higher percents. While he can use mash deterrents and reads to "game" the system, these are inconsistent by nature, often making early kills somewhat uncommon and risky; these tendencies. Compounding this, King K. Rool received nerfs in 2.0.0 that made his already negative perception even worse than before at the time, even though they turned out to not matter as much as players thought. Because of these factors, almost every top professional saw him as one of the worst characters in the game within months, which was especially notorious among the Japanese top players, many of which considered him to be the single worst character in the game. He was simply too inconsistent to be seen as a viable pick in the high power level ''Ultimate's'' cast brought to the table.

King K. Rool later received small but helpful buffs in patch 3.0.0, although they weren't significant enough to address his significant flaws, and his competitive reputation remained poor. Nevertheless, it improved his representation, with {{Sm|Dera}} getting a win against {{Sm|Somé}} during {{Trn|Obasuma OST 4}} and placing 3rd, which was the first glimmer of hope for this at-the-time bottom-tier character. While still typically ranked very low, players such as {{Sm|Ben Gold}}, {{Sm|KirbyKid}}, and {{Sm|Muk}} began to earn cosmopolitan results that made people question his reputation as a low-tier character, which was evident when Ben Gold managed to win {{Trn|Battle Arena Melbourne 11}}, an Australian B-tier tournament, with solo King K. Rool. Despite continued buffs and tournament results during this period, top players still viewed K. Rool as rather lowly, with many Japanese top professionals still viewing him as the single-worst character in the game. However, some western top players shifted into a more positive view. Some of them, such as {{Sm|ESAM}} and {{Sm|MVD}}, went so far as to say that King K. Rool is not a low tier, but a mid tier character instead. Regardless, Ben Gold would continue to get astounding results at PGR-level events well into 2020, such as 17th at {{Trn|Phantom 2020}}, continuing to challenge the opinions of the masses. By the time Ben Gold dropped the character, {{Sm|KirbyKid}} carried the torch and {{Sm|Raphy}} began to see high-level success in Europe, with their most notable results being 13th at {{Trn|InfinityCON Tally 2021}} and 5th at {{Trn|Smash Contest: DoKomi 2021}} respectively.  

Because of the uptick in tournament results and drastic improvements in patches, even top professional players have shifted their opinion into a more positive side, stating that K. Rool might finally have some potential. {{Sm|Dabuz}} goes as far as saying that K. Rool is a high-mid tier character, and some Japanese players — such as {{Sm|Raito}}, who considered him to be the worst character in the game — have stated that K. Rool might be a lot more threatening. How much better he is after all the patches, as well as his true viability, however, remain to be seen; some of his fatal flaws are still present even after numerous buffs, often demanding a secondary pick for his worst matchups. Regardless, his top players like Ben Gold and KirbyKid have seen success with near-solo K. Rool usage since 2020, so perceptions appear to be changing for the better.

===Most historically significant players===

<!--This character has a ten player limit for this section. Before adding and/or removing a player, read these guidelines: https://www.ssbwiki.com/SmashWiki:Notability#%22Most_historically_significant_players%22_guidelines -->

''See also: [[:Category:King K. Rool professionals (SSBU)]]''

*{{Sm|Ben Gold|Australia}} - The best King K. Rool player in the world during 2019 and 2020, but has since dropped the character for {{SSBU|Wolf}}. Placed 1st at {{Trn|Battle Arena Melbourne 11}}, 5th at {{Trn|Phantom 2019}}, 17th at both {{Trn|Thunder Smash 3: Clash of the Pandas}} and {{Trn|Phantom 2020}}, and 25th at {{Trn|2GG: Nightmare on Smashville}} with wins over players such as {{Sm|kameme}}, {{Sm|Extra}}, and {{Sm|Jdizzle}}. Currently ranked 7th on the [[Australian Power Rankings]].

*{{Sm|Dera|Japan}} - The best King K. Rool player in Japan. Placed 3rd at {{Trn|Obasuma OST 4}}, 5th at {{Trn|Obasuma OST 2}}, and 7th at {{Trn|TSC 13}} with wins over players such as {{Sm|Somé}}, {{Sm|Rattsu}}, and {{Sm|TRIGGER}}. Currently ranked 5th on the [[Tohoku Power Rankings]].

*{{Sm|KirbyKid|USA}} - The current best King K. Rool player in the world. Placed 5th at {{Trn|CyPhaCon Mini Esports}}, 13th at {{Trn|InfinityCON Tally 2021}}, 1st at {{Trn|Anime Houston 2021}}, and 33rd at {{Trn|Low Tide City 2021}} with wins over players such as {{Sm|Epic Gabriel}}, {{Sm|Kobe}}, {{Sm|kept}}, {{Sm|Suarez}}, and {{Sm|Goblin}}. He is also considered the best King K. Rool player online, placing 2nd at both {{Trn|The Box: Lunch Box 4}} and {{Trn|The Collective 3}}, 3rd at {{Trn|Zinc Tank 3}}, and 5th at both {{Trn|The Box: Lunch Box 8}} and {{Trn|SWT: NA Southeast Ultimate Online Qualifier}}. Currently ranked 17th on the [[Wi-Fi Warrior Rank v7]].

*{{Sm|Raphy|Germany}} - The best King K. Rool player in Germany and one of the best in Europe. Placed 5th at both {{Trn|Breakpoint Ultimate - FIVE}} and {{Trn|Smash Contest: DoKomi 2021}} as well as 7th at {{Trn|BOILINGPOINT BRAWL}} with wins over players such as {{Sm|Tarik}}, {{Sm|Youssef}}, and {{Sm|Rinor}}.

*{{Sm|Onua|USA}} - One of the best King K. Rool players in the United States but has since dropped the character. Placed 9th at [https://smash.gg/tournament/sweet-spot-5-100-pot-bonus/details Sweet Spot 5], 33rd at both {{Trn|Standoff 2019}} and {{Trn|River Rumble}} with wins over players such as {{Sm|Wisdom}} and {{Sm|Kwaz}}. Currently ranked 10th on the current Kansas City Power Rankings.<ref>https://smash.gg/rankings/super-smash-bros-ultimate/series/kansas-city Kansas City PR</ref>.

King K. Rool's opponents are among the heaviest characters in the game. The boss of this route is [[Galleom]], likely as a reference to his hulking proportions and his postures being similar to K. Rool's arch-nemesis, Donkey Kong. Additionally, "Galleom" is spelled similarly to "Galleon", which can be a reference to the song most associated with King K. Rool, ''{{SSBUMusicLink|Donkey Kong|Gang-Plank Galleon}}''.

!Round!!Opponent!!Stage!!Music

|1||{{CharHead|Charizard|SSBU|hsize=20px}}||[[Unova Pokémon League]]||''{{SSBUMusicLink|Pokémon|Victory Road - Pokémon Ruby / Pokémon Sapphire}}''

|2||{{CharHead|Bowser|SSBU|hsize=20px}}||[[Find Mii]]||''{{SSBUMusicLink|Super Mario Bros.|King Bowser - Super Mario Bros. 3}}''

|3||{{CharHead|King Dedede|SSBU|hsize=20px}}||[[Boxing Ring]]||''{{SSBUMusicLink|Kirby|King Dedede's Theme (Brawl)}}''

|4||{{CharHead|Ridley|SSBU|hsize=20px}}||[[Brinstar Depths]] ([[Battlefield form]])||''{{SSBUMusicLink|Metroid|Vs. Ridley}}''

|5||{{CharHead|Ganondorf|SSBU|hsize=20px}}||[[Bridge of Eldin]]||''{{SSBUMusicLink|The Legend of Zelda|Calamity Ganon Battle - Second Form}}''

|6||{{CharHead|Donkey Kong|SSBU|hsize=20px}}||{{SSB|Kongo Jungle}}||''{{SSBUMusicLink|Donkey Kong|Crocodile Cacophony}}''

|colspan="4"|[[Bonus Stage]]

{{clear}}

Additionally, he makes an appearance as a few primary spirits under his alter egos from the ''Donkey Kong Country'' series.

==In Spirit battles==

SSBUWebsiteKingKRool1.jpg|On [[Green Greens]].

SSBUWebsiteKingKRool2.jpg|Using his [[Blunderbuss]] on [[Pirate Ship]].

SSBUWebsiteKingKRool4.jpg|{{SSBU|Villager}} taking out K. Rool's [[Pocket|pocketed]] Crown on [[Tortimer Island]].

SSBUWebsiteKingKRool6.jpg|His pink and blue [[Alternate costume (SSBU)|costumes]] on [[Prism Tower]].

KingKRoolAndPeach.jpg|Using [[Crownerang]] on {{SSBU|Peach}}, who's standing behind [[Toad_(move)|Toad]].

King K Rool Final Smash SSBU.gif|Using his [[Blast-o-Matic|Final Smash]].

*Outside of minor cameos and rereleases of older titles, ''Ultimate'' marks King K. Rool's first physical appearance in a bit over a decade. He had last appeared in ''{{s|mariowiki|Mario Super Sluggers}}'', which released on June 19, 2008 in Japan, August 25, 2008 in North America, and was neither released in Europe nor Australia.

**{{s|mariowiki|DK Jungle Climber}}, released in Europe on October 12 and Australia on November 1, 2007 marked the last time King K. Rool physically appeared in these regions.

*King K. Rool is the third playable ''Smash Bros.'' character to have been created outside Japan, following {{SSBU|Diddy Kong}}, also created as part of the ''Donkey Kong Country'' series by the British developer [[Rare]], and {{SSBU|Dark Samus}}, who was created by the Texas-based {{s|wikipedia|Retro Studios}}.

*King K. Rool is the fourth of five newcomers to be announced in ''Ultimate'' that was previously featured as a [[Mii Fighter]] [[Alternate costume (SSB4)#Mii Fighter|costume]] in ''[[Super Smash Bros. 4]]''. The other four are {{SSBU|Inkling}}, {{SSBU|Daisy}}, {{SSBU|Chrom}}, and {{SSBU|Isabelle}}.

**As a result of King K. Rool's inclusion, fans of the character issued a [https://twitter.com/KRoolKountry/status/1033530396657508352 thank you letter] to Masahiro Sakurai and Nintendo of America for including him as a playable fighter. The letter was signed by fans and Nintendo of America [https://twitter.com/KRoolKountry/status/1059523712838459392 even wrote back] to the fans, expressing gratitude towards them for the fan letter.

**This is the first time that the English name is spoken verbally in a game. The first time it was spoken verbally was in the [[mariowiki:Bad Hair Day|pilot episode of the ''Donkey Kong Country'' animated series]], although it was alternated with the pronunciation "King Kuh-Rool" before the pronunciation of "King Kay-Rool" was dropped entirely.

*King K. Rool is the second character in the series whose [[back aerial]] meteor smashes opponents, the first being {{SSBU|Lucas}}.

**King K. Rool is also the second character who has a smash attack that meteor smashes, in his up smash, first being {{SSBU|Bayonetta}}'s down smash, though it isn't used for spiking opponents.

*During early gameplay footage released by Nintendo showing King K. Rool facing off against {{SSBU|Snake}}, the announcer did not say, "wins" after saying King K. Rool's name on the victory screen. This was later fixed.

*King K. Rool is the second character in the series with the ability to [[counterattack|counter]] attacks and to [[reflection|reflect]] projectiles in his default moveset, the first being {{SSBU|Palutena}}.

*King K. Rool is the only character in the series with a taunt that utilizes [[armor]].

*King K. Rool is the character that made the most appearances in newcomer trailers in CGI form, appearing in his own, {{SSBU|Ken}} and {{SSBU|Incineroar}}'s, {{SSBU|Banjo & Kazooie}}'s, {{SSBU|Sephiroth}}'s and {{SSBU|Sora}}'s trailers.

*King K. Rool, along with {{SSBU|Wario}} and Incineroar, each have a Classic Mode route that consists almost entirely of super-heavyweight fighters.

**Incineroar is the only heavy character that is not encountered in King K. Rool's Classic Mode route.

*King K. Rool is the second most common opponent for Classic Mode routes, as he appears in 19 different routes, with the most being {{SSBU|Link}} with 22 different routes.

*If King K. Rool gets grabbed by a grab that uses a unique animation on capturing characters (Snake's grab, Ganondorf's Flame Choke, etc.) while using his forward smash, the boxing glove will remain on his hand until he gets released.

*King K. Rool's [https://www.nintendo.com/amiibo/detail/king-k-rool-amiibo-super-smash-bros-series/ description] from the North American [[amiibo]] website is based on his NTSC trophy description from ''[[Super Smash Bros. 4]]''.