Super Smash Bros. series

One-hit KO

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The editor who added this tag elaborates: Needs some more info from Ultimate
This article is about attacks with enough knockback to KO in one hit. For KOs that occur instantly and bypass all knockback, see Instant KO.
For the smasher OHKO, see Okoru.

A one-hit KO, commonly abbreviated as OHKO (also referred to as an Instant KO in Melee), is an attack in the Super Smash Bros. games with such high base knockback that it KOs an opponent at 0%. Such attacks currently exist in every installment of the series.

Definition

In general, a move is considered a one-hit KO if:

  • It is capable of KOing Mario at 0% through sheer knockback alone from the middle of the respective game's Final Destination.
  • It is not a meteor smash unless the hitboxes are also capable of OHKOing onstage (meteor smashes like Beast Ganon's are therefore OHKOs in Brawl, while Luigi's down taunt is not).
  • It deals damage and/or does not cause a KO by forcibly re-positioning the opponent (such as push effects and dragging Final Smashes). There are some exceptions, such as Jigglypuff's Puff Up in Brawl which has both sheer OHKO power and an extreme push effect, and Samus' Zero Laser in the same game, which has dragging hits before the final hit.
  • It is not extremely situational (such as the first hit of Roy's Blazer against Jigglypuff on specific stages in Melee, or Jigglypuff's uncommonly high shield jump).

Another common standard is to compare the move's knockback to the smash attack of the Home-Run Bat, one of the few moves intended to be the quintessential OHKO by the developers.

Moves with the potential to OHKO are not necessarily guaranteed to do so, and may fail to OHKO under the following circumstances:

  • The opponent techs, DIs, utilizes momentum cancelling, and/or crouch cancels to reduce the knockback or alter the trajectory of the attack.
  • The opponent is flung into a wall, which absorbs enough knockback to prevent the OHKO, or successfully executes a wall tech.
  • The move's sweetspot (if any) does not land (particularly evident for sword-based hitboxes, such as Roy’s Flare Blade in every game featuring him or Lyn' slash in Brawl).
  • The move requires more hitboxes to land but some of them fail (for example, Lugia’s Aeroblast in Melee, which can whiff if the character is hit on the edge and escapes; in Brawl it deals a single, immensely powerful hit which always OHKOs, but suffers from a smaller hitbox).
  • The stage is extremely large (e.g. Temple, New Pork City, and 75m), or the opponent is at the far edge of a stage.
  • The move was weakened previously due to stale-move negation.
  • Opponents are under an effect that makes them more resilient (such as being giant, metal, or in an event that reduces the knockback they sustain), or the player is weakened (such as being tiny or given a lower handicap).
  • The launch rate is lower than standard, reducing knockback.
  • The opponent's gravity is affected via equipment.
  • The player is under the effect of a sticker or a spirit that increases resistance to flinch. It is only possible in Adventure Modes.

A Final Smash executed using Final Smash Meter always loses its OHKO potential, unless specific spirits prevent this.

List of One-Hit KOs

This page lists the moves that can OHKO within the rules mentioned above.

Certain moves and situations are not considered to meet the definition of one-"hit" KO's:

Some stage hazards or enemies are capable of OHKOing on their respective stages, and will be listed below.

In Super Smash Bros.

Moves that KO at 0% were almost nonexistent in the original Smash. In fact, aside from the Home-Run Bat, only one move in the game is able to OHKO, under uncommon conditions:

Items

Bosses

The following will usually cause an OHKO on Very Hard difficulty only:

Video

The following video demonstrates the main moves that KO at 0% in Smash Bros:

In Super Smash Bros. Melee

Unlike in Smash 64, there are multiple moves that can OHKO in Melee, including playable characters’ attacks and stage hazards. They still remain relatively rare, however.

Playable characters' moves

Contrary to common belief, Roy's Blazer is not an OHKO, having very high fixed knockback but not quite enough to qualify under the required conditions. However, in particular situations it could potentially KO very light characters at 0% in small stages if its sweetspot lands, specifically characters not heavier than Jigglypuff.

Items/Enemies

  • A smash attack with the Home-Run Bat.
  • Touching Moltres.
  • Getting caught in Lugia's Aeroblast (if most hits connect). Unlike Brawl, Aeroblast requires more hits to KO at 0%, but its hitbox is very large. Touching Lugia’s body can also lead to an OHKO if multiple hits chain (while a single hit KOs Mario) as low as 35%).
  • A thrown Polar Bear (sweetspot).
  • A Green Shell gains OHKO power when reflected 3 or 4 times by two Foxes using Reflector.

Marill's Tackle can push players past the side blast line, but as it inflicts no conventional knockback it is not considered a one-hit KO.

Contrary to common belief, Articuno’s Icy Wind is not an OHKO, having very high knockback but not quite enough to qualify under the required conditions (it usually KOs Mario starting from 12%). However, this attack could potentially KO lighter characters at 0% on Final Destination if its sweetspot lands, specifically characters not heavier than Pikachu.

Stage hazards

While touching a Blue Klaptrap on Jungle Japes causes a powerful meteor smash of OHKO power, it is otherwise unable to cause a conventional OHKO by the standards mentioned above.

Bosses

The following will usually cause an OHKO on Very Hard difficulty only:

  • Master Hand’s Finger Drill (if all hits connect), Tri-Poke (if all hits land).
  • Crazy Hand’s Fake-Out Slap and Flying Slap.
  • Master Hand and Crazy Hand’s Crush (if all hitboxes land), Power Punch, Flying Punch (sweetspot), and Jetstream (sweetspot).
  • Combined Master Hand’s and Crazy Hand’s Applause (if all hits connect) and Sandwich Punch.

Others

In Cruel Melee, almost all the attacks of the Fighting Wire Frames are powered so much that they can easily OHKO every character. These moves include, for example, forward smash and up smash, but also punches, kicks, and other moves. The same strengthening, if not, even more, will be seen again in Brawl.

Video

The following video demonstrates nearly all the moves and hazards that KO at 0% in Melee:

In Super Smash Bros. Brawl

Brawl continued the trend of adding several OHKOs into the game, resulting in a huge number of them (especially in The Subspace Emissary). However, the majority are Final Smashes, items (mainly Pokéballs), stage hazards, enemy and boss attacks, with relatively few being standard moves of playable characters. On the higher difficulties of The Subspace Emissary (but even on the lower ones in some cases), several enemy attacks are invariable OHKOs, as well as many boss attacks. Also, nearly all Tabuu's moves are guaranteed OHKOs in every situation, most of them even in Boss Battles (where the player has only one life and no continues).

Some notes:

  • In the Subspace Emissary, the player's gravity and falling speed are automatically increased up to 19% from normal Brawls, making KOs slightly less likely.
    • It is also possible to use flinch resistance stickers to severely reduce knockback, although they can't protect from very powerful OHKOs, at least on the higher difficulties (like Winged Tabuu's Off Waves or Golden Bracket).
  • In Boss Battles, boss attacks are normally weaker, having slightly more than one half of their original speed and power (with some notable exceptions). The difference is more evident on the lower difficulties (Easy overall) than on the higher ones (Intense in particular). This is done to partially compensate the fact that the player has only one stock and no continues, items or stickers.
    • However, since the player’s gravity and falling speed have been restored to normality, boss attacks usually have the same knockback of the previous difficulty in the Subspace Emissary. This results in most of them maintaining OHKO power one difficulty above.
    • Master Hand and Crazy Hand are an exception, being severely nerfed in power, speed and HP from the Classic Mode. None of their attacks can OHKO in this mode (notice that they only appear separately).

Playable characters' standard moves

Contrary to common belief, Mr. Game & Watch's Judge #9 is not an OHKO, having very high knockback but not quite enough to qualify under the required conditions (it usually KOs Mario starting from 10%). The same applies to Ike's stage 7 Eruption and Ganondorf's reverse aerial Warlock Punch, which can both KO Mario as low as 8% but don't respect the general definition. However, all these attacks could potentially KO lighter characters at 0% on Final Destination if their sweetspot lands, specifically characters not heavier than Pikachu. Also, if Kirby inhales Ike or Ganondorf, its copied stage 7 Eruption / reverse aerial Warlock Punch is usually slightly more powerful, KOing Mario as low as 5%. It has now enough power to KO several lighter characters at 0% on Final Destination if its sweetspot lands, specifically characters not heavier than Zelda.

Although it can't be qualified under the required conditions, Pikachu's Thunder can KO most (if not all) characters at 0% on several specific stages with a high enough top platform, due to having very high knockback in Brawl. These stages are 75m, Rumble Falls, Hanenbow, Pirate Ship, Flat Zone 2, Mario Bros., Delfino Plaza’s square, the elevated part of Rainbow Cruise, the World 1-2 version of Mushroomy Kingdom and any custom stage with an high enough platform. However, since it simply hits opponents close to the blast line, Thunderspiking can never be truly considered a one-hit KO under the general definition. In fact, used on Final Destination this move can KO the lighter characters only starting from 45%.

Final Smashes

  • Marth's Critical Hit.
  • Jigglypuff's Puff Up both by push and simple contact (the hitbox when Jigglypuff shouts and deflates has extremely high base knockback in Brawl).
  • Lucario's Aura Storm at high Aura if most hits connect.
    • If the initial take off lands, the attack OHKOs Mario when Lucario has only taken 95% damage (roughly a 55% Aura). Considering only the beam’s power, it is an OHKO starting from 125% damage for Lucario (roughly a 73% Aura).
  • Pokémon Trainer's Triple Finish if most hits connect (always needs the last hit to land for a KO).
  • Pikachu’s Volt Tackle if all hitboxes land (getting caught by the electrical sphere and hit by the final discharge).
  • Ganondorf's Beast Ganon if most hitboxes land (at least one stomp and charge). If a character paralyzed by Beast Ganon is not hit by the charge afterward, they will be inflicted a meteor smash of OHKO power.
  • Zelda's Light Arrow (guaranteed on the first target). Power decreases by 25% for each target, but its perfectly horizontal knockback can lead to a guaranteed KO for multiple characters with poor recovery.
    • Sheik’s Light Arrow (barely in OHKO threshold, easily DIed). Power does not decrease hitting more targets.
  • Link’s and Toon Link’s Triforce Slash if both hitboxes land (multiple slashes and final blow).
  • Samus' Zero Laser if most hits connect.
  • Zero Suit Samus' Power Suit Samus if both hitboxes chain (being sucked by the vacuum and contact with her body). However, it only works if the character is extremely close to Zero Suit Samus before she starts sparkling.
  • Olimar's End of Day if all hitboxes land (bury, ascent, and explosion). Offstage opponents hit by the rocket's thrusters will also experience an OHKO via meteor smash.
  • Captain Falcon’s Blue Falcon.
  • Wario-Man's Wario Waft with enough charge. It OHKOs Mario starting from 1 minute and 20 seconds (roughly a 73% charge).

Luigi’s Super Jump Punch during Negative Zone can KO almost all characters at 0% in several situations, but it is not considered a true one-hit KO under the general definition. In fact, while Negative Zone is active, characters’ weight could be severely reduced, making KOs much more likely. This Final Smash will also inflict damage to the characters: it implies that, when Luigi’s Super Jump Punch lands, characters have already taken more than 0% damage.

Despite lacking enough knockback to be qualified under the required conditions, Ike's Great Aether can KO most (if not all) characters at 0% on several specific stages, if all hitboxes land (blade swing, multiple slashes or kicks and final blowing explosion). These stages are 75m, Rumble Falls, Hanenbow, Flat Zone 2, Pirate Ship, Mario Bros., Onett, Summit, Spear Pillar, Luigi Mansion, Skyworld, The Ruins, Delfino Plaza's square, the elevated part of Rainbow Cruise, the World 1-2 version of Mushroomy Kingdom and any custom stage with an high enough platform. However, despite being a guaranteed KO under these conditions, it doesn't fit the general definition: in fact, the opponent is simply brought up to the top platform, very close to the stage boundary, before being KOed. Used on Final Destination, this move can KO the lighter characters only starting from 20%.

Items

  • The Dragoon.
  • A smash attack with the Home-Run Bat.
  • Touching Moltres.
  • Lugia's Aeroblast. Unlike Melee, a single hit will always OHKO the characters (without trapping them in most cases), but the attack suffers from a smaller hitbox. Touching Lugia’s body can also lead to an OHKO if multiple hits chain (while a single hit KOs Mario) as low as 30%).
  • Articuno’s Sheer Cold.
  • Suicune's Aurora Beam. The beam will not freeze at 0%, but still deals more than enough knockback to OHKO regardless.
  • Ho-oh’s Sacred Fire if most hits connect (always needs the last hit to land for a KO). Midair opponents are also OHKOed by a very powerful meteor smash.
  • Deoxys's Hyper Beam (or touching its body), both the initial hit and the following multi-hitting laser.
  • A thrown Bonsly (sweetspot).
  • Electrode's Explosion or when smash thrown. If an Electrode fails to burst, it can still be picked up and smash thrown with guaranteed OHKO power.
  • Weavile's False Swipe if both hitboxes land (multiple slashes with stun effect and either the final blowing slash or an uppercut on airborne characters).
  • Gardevoir's Reflect upon reflecting a strong enough projectile (such as a Bob-omb or Zelda's Din's Fire; it cannot reflect a Hothead). It is the most powerful Reflector, dealing double the original projectile's damage and knockback.
  • Wobbuffet’s Counter (automatically used at every hit; body hitbox) when countering an OHKO attack or a hitbox that deals at least ~25% damage.
  • Metagross' Earthquake if all hitboxes land (bury, stomps and upward smash). It also has a powerful meteor smash capable to OHKO nearby midair characters.
  • Latios and Latias’ Steel Wing if all hits chain (needs to trap characters in the vacuum).
  • Snorlax’s Body Slam if both hits chain (initial jump or contact with its body and being hit by the Body Slam afterwards).
  • Dr. Wright’s highest skyscraper.
  • Lyn’s slash (sweetspot).
  • Knuckle Joe's attacks if both hitboxes land (Vulcan Jab and either Rising Break or Smash Punch).
  • Waluigi's Racket Smash, sweetspotted, if all hitboxes land (bury, multiple stomps and finishing kick or blow). It can also OHKO characters by meteor smash.
  • Little Mac’s uppercut (sweetspot).
  • At least two Blast Boxes or four Smart Bombs, Gooey Bombs or Bob-ombs exploding at the same time.
  • If Wario runs over a buried Pitfall while riding on his Wario Bike, he will be sent flying at OHKO power. A thrown Pitfall can also meteor smash midair opponents with OHKO power.
  • When a Hothead reaches its full power for the last seconds before fading, or after taking enough damage, any contact will be an OHKO (touching the sparks is even more powerful).
    • If an uncharged Hothead is hit by an electric or flame-based hitbox that deals at least 30% damage (such as Ike’s stage 6-9 Eruption), it will OHKO when smash thrown or launched. Any contact while traversing the stage at this strength (or with the sparks it emits) will also OHKO.
  • If a Soccer Ball is launched at enough speed (after either being hit by an extremely powerful attack such as forward smash or a Home Run bat swing, or simply being launched after receiving enough damage), it will OHKO anyone it slams into.
  • A Green Shell gains OHKO power when countered 3 or 4 times by a Reflector (for example Fox's or Pit’s). This also applies to Green Shells and Red Shells obtained by defeating a Koopa Troopa or Koopa Paratroopa in The Subspace Emissary and to Shellcreepers in Mario Bros. stage. Red Koopa Shells and Shellcreepers are usually much more powerful when reflected.

Isaac, Devil, Kyogre's Hydro Pump and Piplup's Surf can push players into the side blast line, but as they inflict no conventional knockback they are not considered one-hit KOs.

Stage hazards

  • The Ultimate Chimera's bite on New Pork City.
    • If the the bite lands on the mouth’s edge, it deals the same, immense knockback of Marth’s Critical Hit. If the bite traps the character inside the mouth (or the Ultimate Chimera turns around to inflict a reverse bite), both knockback and damage are even higher, rivalling Tabuu’s Off Waves on the higher difficulties.
  • Dialga's Roar of Time and Overheat (or touching its body), Palkia's Spacial Rend and Cresselia's Psycho Cut (at full power before fading) on Spear Pillar.
  • The fastest forms of Sidesteppers (Red) and Shellcreepers (both Blue and Pink) on Mario Bros., or every other version of them when smash thrown or launched. Touching the fastest red or green Flames is also an OHKO.
  • The fastest cars on Big Blue.
  • Corneria's laser beams.
  • The energy blast shot by Halberd’s Combo Cannon if all hits connect.
  • Touching the hull of the Pirate Ship.
    • If a character is fired by the catapult and hit by a strong attack at the same time (such as Pikachu’s Thunder, very powerful in this game), it could potentially be OHKOed. However, this only happens if the two hits chain in a few frames, since the attacks combine to dramatically boost their knockback.
  • Touching the hull of the flying ship on Rainbow Cruise.
  • On Flat Zone 2, if a falling tool is launched at enough speed (after either being hit by an extremely powerful attack such as a Home-Run Bat swing, or being launched after receiving enough damage), it will OHKO anyone it slams into.
    • Other hazards are also capable of OHKOs on this stage, such as Lion Tamers.
  • Being hit by the falling spears on PictoChat.
  • Norfair's giant magma wave if all hits connect.
  • The bomb on Bridge of Eldin.
  • The first and fourth spikes on Rumble Falls (can easily be teched).

While touching a Klaptrap on Jungle Japes causes a powerful meteor smash of OHKO power, it is otherwise unable to cause a conventional OHKO by the standards mentioned above.

The Subspace Army (enemies and opponents)

The following will usually cause an OHKO on Intense difficulty only:

The following will cause an OHKO on both Very Hard and Intense difficulties:

The following will cause an OHKO on Hard or higher difficulties:

  • Armank's ramming and sweeping attacks.
  • Buckot's fire shards (if most hits connect).
  • Giant Bytan's full power charge (at low health).
  • Greap's ax chop.
  • Every Shaydas' triple blade slash (only used at low health).
  • Ticken's charge.
  • Towtow's charge.

The following will cause an OHKO on Normal or higher difficulties:

The following will cause an OHKO on every difficulty:

Touching a Trowlon on every difficulty is not an OHKO in conventional terms, since it simply carries the player past the top blast line for a guaranteed KO. The only way to survive is by jumping off. The same applies to Borboras' very powerful wind, that pushes the player offscreen with power drastically increasing with the difficulty, and to Bucculus' kiss (this one is very easy to avoid, despite dealing enormous damage).

Many other enemies and several opponents are also capable of OHKOs.

The Subspace Army (hazards and traps)

The following will usually cause an OHKO on Intense difficulty only:

The following will cause an OHKO on Hard or higher difficulties:

  • Touching Jyk (all the three variants).

The following will cause an OHKO on Normal or higher difficulties:

The following will cause an OHKO on every difficulty:

Notice that the Porky Statue, Jyks and Quark Mines are sometimes considered enemies, since they move and chase the player.

Other hazards are also capable of OHKOs, while others can inflict an Instant KO.

The Subspace Army (bosses)

The following will usually cause an OHKO on Intense difficulty only:

  • Petey Piranha's Left or Right Cage Smash boosted by Roar (it only happens twice per battle when each cage reaches 1/3 HP; always noticed due to the red aura).
  • Several of Rayquaza's moves at low health (25% or less):
    • Sweetspotted Dig, Ground Burst and Air Dash & Extremespeed.
  • Several of Rayquaza's moves at very low health (5% or less):
    • Iron Tail boosted by Roar (sweetspot; Roar is sometimes used to push the player away and slightly increase the knockback of certain moves).
    • Horizontal Electric Ball and Diagonal Electric Ball.
  • Porky Minch's Jump (sweetspot) and Energy Laser (both variants).
  • Ridley's Flying Stomp (sweetspot), Loop-de-Loop (if most hits connect), Tail Swoop (if most hits connect at very low health; always needs the last hit to land for a KO) and Slamming Rush.
  • Several of Duon's moves:
    • Triple Slash (if most hits connect; always needs the last hit to land for a KO) and Blue Bolts or Vertical Pink Shots (contact with the bright blue / pearl sphere only, not the beams - which KO at 30%).
    • Homing Missiles if all the four chasing projectiles explode at the same time.
  • Galleom's Side Crush (sweetspot) and Uppercut (sweetspot).
  • Meta Ridley's Tail Swoop if most hits connect (always needs the last hit to land for a KO).
  • Tabuu's Diving Slash (sweetspot) and Ghost Projection (surrounding burst, clones and Tabuu's body hitbox).

The following will cause an OHKO on both Very Hard and Intense difficulties:

  • Rayquaza's Lightning Strike (only used at low health; it deals massive fixed knockback that increases with difficulty) and Blast.
  • Porky Minch's Stabbing Flurry (if most hits connect; always needs the last hit to land for a KO).
  • Touching the Porky Bots sent out by Porky Minch.
  • Ridley's Background Ram.
  • Duon's Vacuum Spin (if most hits connect or via meteor smash) and Charge.
  • Galleom's Shockwave (first punch only), Tank Rush (only used by Tank Galleom at medium to high health) and Jump.
  • Tabuu’s Explosive Teleport and Shuriken Boomerang (second swing).

The following will cause an OHKO on Hard or higher difficulties:

  • Porky Minch's Dash.
  • Duon's Sword Blast (the slash itself, not the shockwave - which KOs below 20% on Intense), Head Sword Chop and Jump Crash.
  • Meta Ridley’s Mega Fire Ball.
  • Galleom's Tank Rush & Slam (both hitboxes; the falling attack is quite stronger and only used by Tank Galleom at low health), Tornado Spin (if most hits connect) and Falling Body Slam.
  • Tabuu's Shuriken Boomerang (first swing), Shark Blade (blade and Tabuu’s body hitbox), Bullet Rain (second hitbox: the huge energy sphere), Chain of Light (on a single target) and Pinpoint Explosion.

The following will cause an OHKO on Normal or higher difficulties:

  • Several of Tabuu's moves:
    • Dragon Laser.
    • Chain of Light on two targets. Tabuu will attempt to smash the players together with the Chain, nearly always resulting in a double OHKO.
    • Golden Bracket (on a single target) and Electrical Shield (sparkles and Tabuu’s body hitbox). Due to perfectly horizontal knockback, these attacks will also cause a guaranteed KO for poor recovery characters even on Easy difficulty.

The following will cause an OHKO on every difficulty:

  • Porky Minch's Lightning if most hits connect or Porky has low health (25% or less).
  • Meta Ridley’s Falcon Flyer Smash and Falcon Flyer Stamp. These attacks will also drag the player past the bottom blast line for a guaranteed KO. In any case, the only way to survive is by jumping.
    • However, contact with Meta Ridley while it's rising after Falcon Flyer Smash will send the player past the blast line for a guaranteed KO, forcing the player to pay attention before landing.
  • Several of Tabuu's moves:
    • Rapid Chop if most hits connect (always needs the last slash to land for a KO).
    • Golden Bracket on two targets. Tabuu will attempt to smash the players together, always resulting in a double OHKO. The same happens if both players are trapped in the cage.
    • Off Waves (waves and Winged Tabuu’s body hitbox).
      • In the Subspace Emissary (but not in Boss Battles), Off Waves are the only move to be nerfed in co-op mode (in both speed and power), regaining their guaranteed OHKO power on Normal difficulty. This may be to compensate the fact that they cover the entire screen and are Tabuu's strongest move. However, their sweetspot or contact with Winged Tabuu will still OHKO on Easy difficulty, also lighter characters are nearly always KOed at 0% even if the player is far from Winged Tabuu, specifically characters not heavier than Lucas.
      • Even the sourspot always OHKOs on Normal difficulty and above.
  • These small hitboxes always deal a guaranteed KO:
    • Touching the sparkling spheres of Porky Minch's Lightning and Energy Beam, or jumping on Porky during these moves.
    • Standing on Duon while Jump Crash is performed.
    • Touching Tabuu's hand when he shoots the huge energy sphere during Bullet Rain attack (always noticed due to the red flash).

Meta Ridley's Falcon Flyer Pull on every difficulty is not an OHKO in conventional terms, since it simply drags the player past the bottom blast line for a guaranteed KO. The only way to survive is by jumping. Ridley’s Blasting Roar, Porky Minch's Dash and Galleom's Shockwave can also carry the player past the side blast lines, but only under certain conditions and can be easily avoided.

Tabuu's Bullet Rain is always a KO on every difficulty if the player is hit both by the first (high-damaging bullets) and the second hitbox (explosive sphere). However, since the two hitboxes are separated by a brief interval when the player is free to move, this move can't be considered an OHKO on all difficulties. The same applies to Tabuu's Electrical Shield: on lower difficulties only, when the players touch the spark rings (but not Tabuu's body) they will simply flinch, although they can be sucked in repeatedly by a very powerful vacuum effect before being KOed.

Other boss attacks are also capable of OHKOs.

Classic Mode (bosses)

The following will usually cause an OHKO on Intense difficulty only:

  • Master Hand’s Tri-Poke (if all hits connect), Crush (if most hitboxes land) and Vertical Throw.
  • Crazy Hand’s Squeeze (if most hitboxes land), Flying Slap and Fake-Out Slap.
  • Master Hand's and Crazy Hand’s Power Punch, Flying Punch and Jetstream.
  • Combined Master Hand and Crazy Hand's Sandwich Punch (guaranteed).

The following will cause an OHKO on both Very Hard and Intense difficulties:

  • Master Hand's and Crazy Hand's Finger Drill if most hits connect.
  • Combined Master Hand’s and Crazy Hand’s Applause (if most hits connect), Sandwich Punch (sweetspot) and Crush Punch.

Boss Battles (bosses)

The following will usually cause an OHKO on Intense difficulty only:

  • Rayquaza's Lightning Strike (only used at low health; it deals massive fixed knockback that increases with difficulty) and Blast.
  • Porky Minch's Stabbing Flurry (if most hits connect; always needs the last hit to land for a KO).
  • Ridley's Background Ram.
  • Duon's Vacuum Spin (if most hits connect or via meteor smash) and Charge.
  • Galleom's Shockwave (first punch only), Tank Rush (only used by Tank Galleom at medium to high health) and Jump.
  • Tabuu’s Explosive Teleport and Shuriken Boomerang (second swing).

The following will cause an OHKO on Very Hard or higher difficulties:

  • Several of Porky Minch's moves:
    • Lightning if most hits connect or Porky has low health (25% or less).
    • Dash.
  • Duon's Sword Blast (the slash itself, not the shockwave - which KOs below 40% on Intense), Head Sword Chop and Jump Crash.
  • Meta Ridley’s Mega Fire Ball.
  • Galleom's Tank Rush & Slam (both hitboxes; the falling attack is quite stronger and only used by Tank Galleom at low health), Tornado Spin (if most hits connect) and Falling Body Slam.
  • Tabuu's Shuriken Boomerang (first swing), Shark Blade (blade and Tabuu’s body hitbox), Bullet Rain (second hitbox: the huge energy sphere), Chain of Light (on a single target) and Pinpoint Explosion.

The following will cause an OHKO on Hard or higher difficulties:

  • Several of Tabuu's moves:
    • Dragon Laser.
    • Chain of Light on two targets. Tabuu will attempt to smash the players together with the Chain, resulting in a double OHKO.
    • Golden Bracket (on a single target) and Electrical Shield (sparkles and Tabuu’s body hitbox). Due to perfectly horizontal knockback, these attacks will also cause a guaranteed KO for poor recovery characters even on Easy difficulty.

The following will cause an OHKO on Normal or higher difficulties:

  • Several of Tabuu's moves:
    • Golden Bracket on two targets. Tabuu will attempt to smash the players together, nearly always resulting in a double OHKO. The same happens if both players are trapped in the cage.
    • Off Waves (guaranteed; waves and Winged Tabuu’s body hitbox).

The following will cause an OHKO on every difficulty:

  • Meta Ridley’s Falcon Flyer Smash and Falcon Flyer Stamp. These attacks will also drag the player past the bottom blast line for a guaranteed KO. In any case, the only way to survive is by jumping.
    • However, contact with Meta Ridley while it's rising after Falcon Flyer Smash will send the player past the blast line for a guaranteed KO, forcing the player to pay attention before landing.
  • Several of Tabuu's moves:
    • Rapid Chop if most hits connect (always needs the last slash to land for a KO).
    • Off Waves (sweetspot or contact with Winged Tabuu). It is nearly always guaranteed on lighter characters even if the player is far from Winged Tabuu, specifically characters not heavier than Zelda.
      • Even the sourspot always OHKOs on Normal difficulty and above.
  • These small hitboxes always deal a guaranteed KO:
    • Touching the sparkling spheres of Porky Minch's Lightning and Energy Beam, or jumping on Porky during these moves.
    • Standing on Duon while Jump Crash is performed.
    • Touching Tabuu's hand when he shoots the huge energy sphere during Bullet Rain attack (always noticed due to the red flash).

Meta Ridley's Falcon Flyer Pull on every difficulty is not an OHKO in conventional terms, since it simply drags the player past the bottom blast line for a guaranteed KO. The only way to survive is by jumping. Ridley’s Blasting Roar, Porky Minch's Dash and Galleom's Shockwave can also carry the player past the side blast lines, but only under certain conditions and can be easily avoided.

Tabuu's Bullet Rain is always a KO on every difficulty if the player is hit both by the first (high-damaging bullets) and the second hitbox (explosive sphere). However, since the two hitboxes are separated by a brief interval when the player is free to move, this move can't be considered an OHKO on all difficulties. The same applies to Tabuu's Electrical Shield: on lower difficulties only, when the players touch the spark rings (but not Tabuu's body) they will simply flinch, although they can be sucked in repeatedly by a very powerful vacuum effect before being KOed.

Other boss attacks are also capable of OHKOs.

Others

  • In The Subspace Emissary, when Auroros’s sky-diving attack fails to hit the player, its beak gets stuck in the ground. Players can pull it out and use it as a thrown item, like a javelin or a spear. A thrown Auroros deals very high knockback and damage, enough to defeat several enemies at 0%. Apparently its power is comparable to that of many one-hit KO moves, but it can never be truly tested outside the Subspace Emissary. Furthermore, on higher difficulties an Auroros can’t be thrown far before being destroyed, and on Intense it can never hit enemies.
  • The Sandbag used in the Stadium for Home-Run Contest gains OHKO power when smashed with a very powerful attack (such as Ganondorf's aerial reverse Warlock Punch). However, this item can never be used outside the Stadium, except in Training.
  • In Cruel Brawl, almost all the attacks of the Fighting Alloy Team are powered so much that they can easily OHKO every character. These moves include, for example, forward smash and up smash, but also punches, kicks and a very high number of moves. Each of the Alloys has also more powerful specific attacks, such as kicks for the Blue Alloy or punches for the Red Alloy, which are both a guaranteed OHKO from the center of the stage even for Bowser. A similar type of strengthening (or slightly lower) was seen in Melee. Also, the Shadow Clones, Subspace Copies and opponents battled in the Subspace Emissary are powered up this way on the higher difficulties only.

Video

The following video demonstrates some moves and hazards that KO at 0% in Brawl:

This video shows some other OHKOs, including more boss attacks.

In Super Smash Bros. 4

Like Brawl, SSB4 continues to add OHKOs to the game, though mostly playable characters’ moves. On the other hand, many Final Smashes and items that were able to one-hit KO before have been severely nerfed in this game. Also, Bayonetta's Infernal Climax becomes the first playable character's move capable of an Instant KO.

Playable characters' standard moves

Contrary to its name and intention, Little Mac's KO Uppercut does not KO until above about 30% damage. At 0% it falls short of the necessary amount of knockback, KOing a character as light as Jigglypuff at 12%. Also, Ganondorf's reverse aerial Warlock Punch is the most powerful non-OHKO attack, KOing Mario from the center of Final Destination as low as 1% on its sweetspot. It means this move can easily KO all the characters lighter than Mario itself at 0% when sweetspotted. With Rage, it eventually gains OHKO power.

Playable characters' moves (with Rage applied)

While the following moves do not guarantee OHKO power under normal circumstances, with Rage they can perform an OHKO:

Final Smashes

Items

  • The Dragoon.
  • A smash attack with the Home-Run Bat.
  • The Daybreak if all hits connect.
  • Electrode's Explosion after being smash thrown.
  • If a Hothead is powered up significantly by a flame-based hitbox (30% total or higher), it will gain OHKO power when smash thrown or emitting sparks. Unlike Brawl, Hotheads don't reach OHKO power automatically for the last seconds or after taking non-fire damage.
  • If a Soccer Ball is launched at enough speed (after either being hit by an extremely powerful attack such as a Home-Run Bat, or being launched after receiving enough damage), it will OHKO anyone it slams into on it’s sweetspot.
  • Smash attacks boosted by the Black Knight item from Smash Tour are occasionally turned into OHKOs (random).

Beetle, Boss Galaga, Kyogre's Hydro Pump and Oshawott's Surf can push the players past the blast lines, but as they inflict no conventional knockback they are not considered one-hit KOs. The first two can also be easily escaped by button mashing at 0%.

Stage hazards

While touching a Klaptrap on Jungle Japes causes a powerful meteor smash of OHKO power, it is otherwise unable to cause a conventional OHKO by the standards mentioned above.

Other

While it isn't accessible in regular battles, the bomb used in the Target Blast stage apparently has more than enough power to OHKO under normal conditions.

Bosses

The following will usually cause an OHKO on 8.0 or higher difficulties:

  • These Master Core's attacks:
    • Blast Waves if the player does not defeat it in time (about 45 seconds).
  • The final explosion after unleashing the last Blast Wave (sweetspot). However, it can never truly defeat the players as they have already won by the time the hitbox lands.

Video

The following video demonstrates all the moves and attacks that KO at 0% in “Smash 4”:

In Super Smash Bros. Ultimate

Like SSB4, Ultimate continues to add OHKOs to the game, though still focusing on playable characters’ moves (while Final Smashes and items have been slightly nerfed again from the previous game). Several characters also gain the ability to instant KO through Final Smashes or special moves; these do not count as OHKOs and belong in its respective page.

Playable characters' moves

Playable characters' moves (with Rage applied)

Final Smashes

Final Smashes executed using Final Smash Meter always lose their OHKO power, with Critical Hit KOing Mario at 20%.

Items

  • The Dragoon.
  • A smash attack with the Home-Run Bat.
  • Electrode's Explosion when smash thrown.
  • A Hothead when brought from no charge to significant overcharge by a single fire attack that deals over 30% damage. Hothead's damage output depends on the average damage output of the moves used to bring it to full charge, and thus gains OHKO power when overcharged by an extremely powerful fire move. If the Hothead hits opponents while sparking, it can OHKO without being overcharged as much, but not when starting from zero charge.
    • For example, a fresh fully charged Flare Blade will sufficiently overcharge a Hothead, but doing so in Training with stale moves disabled removes its ability to sufficiently charge it, as the additional 1.05x freshness bonus just barely grants Flare Blade enough damage to do so.

Boss Galaga, Isaac, Kyogre's Hydro Pump and Oshawott's Surf can push players into the side blast line, but as they inflict no conventional knockback they are not considered one-hit KOs. The first one can also be easily escaped by button mashing at 0%.

Stage hazards

While being hit by a Klaptrap on Jungle Japes causes a powerful meteor smash of OHKO power, it is otherwise unable to cause a conventional OHKO by the standards mentioned above.

Bosses

The following will usually cause an OHKO on Hard difficulty only:

  • Galeem's Lens Flare with weaker or no spirits (sweetspot, if most hits chain; not guaranteed).

Other

While inaccessible in a regular fashion without hacking, the gun found on the Free the Spirit screen's stage is programmed in as its own usable item, inflicting 25% damage with OHKO power. This situation is similar to Smash 4's Target Blast bomb.

Video

The following video demonstrates all the moves and hazards in Ultimate that inflict enough knockback to KO at 0%, alongside some powerful moves that don't. However, it also includes a few moves and hazards that do not inflict any knockback, such as Instant KOs:

Conclusive video

The following video demonstrates several one-hit KOs from every Smash game:

Trivia

  • In Brawl:
    • This game alone features much more guaranteed OHKOs than all the other four games combined together: more than double (over 75%).
    • The Pokémon universe provides the highest number of OHKOs after the original Smash Bros.
    • 22 out of 43 Pokémon physically appearing in this game are capable of OHKOs in some situations.
    • The Legend of Zelda universe provides the highest number of different playable characters with OHKO potential (Zelda or Sheik, Ganondorf, Link and Toon Link). The Pokémon universe provides six characters with this ability, but only if Ivysaur, Squirtle and Charizard are counted as separate characters instead of a single fighter (the Pokémon Trainer).
    • It is the only game where Assist Trophies can OHKO (Lyndis, Knuckle Joe and Dr. Wright are severely nerfed in later games).
    • 16 out of 33 different Final Smashes (for 20 different characters) have OHKO potential if properly executed. The others can also KO at very low percentages.
  • The Home-Run Bat is the only item (and by extension, the only attack) able to perform a guaranteed OHKO in every Smash game, at least on its sweetspot.
  • Roy’s Flare Blade and Counter are the only moves to maintain their OHKO power in every installment; like most sword-based hitboxes, they always require a sweetspot to land.
  • At least one playable character from the Fire Emblem universe possesses a move with OHKO potential in every game (either Marth, Ike, Lucina or Roy). Other main characters appear as items with OHKO power (Lyndis in Brawl and Black Knight in Smash 4).
  • Marth's Critical Hit is the only Final Smash to maintain its OHKO power in every installment. Throughout all games, it is also the most powerful attack of any character's standard moveset (in terms of knockback) without any exterior factors or buffs, being impossible to survive if in direct sight of a blast line, even on the largest stages of each game. In Brawl its strength is even higher.
  • While the majority of OHKOs will fail to work on characters under the effects of a Super Mushroom or Metal Box, a few attacks have such high knockback that it will still OHKO under these circumstances. Examples (in Brawl only) include Suicune's Aurora Beam, Lugia's Aeroblast, Jigglypuff's Puff Up, Marth’s Critical Hit, the Ultimate Chimera's bite and several enemy and boss attacks (even on the lower difficulties for Tabuu's Off Waves).
    • These attacks in Brawl have such immense knockback that it is possible for the main victim(s) to OHKO other opponents by simply knocking into them.
    • Starting from Smash 4, a few Final Smashes have hitboxes that negate the effects of such buffs, such as Marth's Critical Hit.
  • Tabuu on Intense difficulty in the Subspace Emissary has more OHKOs than every other boss or enemy in all the Smash games, with 14. His OHKOs are reduced to 12 on Intense difficulty in Boss Battles. In particular, despite losing its OHKO power, Ghost Projection is still very dangerous, being a guaranteed KO below 20%. Even more dangerous is Explosive Teleport, due to being extremely difficult to prevent (its OHKO potential forces the player to pay attention before attacking Tabuu).
    • Considering Tabuu has only 16 attacks, 88% of his moves are potential one-hit KO moves.
    • Tabuu has only one non-OHKO attack on Intense difficulty: Eye Lasers, that KOs well below 50%. Normal Teleport cannot harm the player in any way.
  • Apart from Tabuu, other bosses that have a notable amount of OHKO moves (in Brawl only) include Duon (with 9), Galleom and Rayquaza (with 8 each), and both Master Hand and Crazy Hand (with 7 each plus 3 combined). All the other bosses in Brawl have 6 or fewer OHKOs.
    • Combined Master Hand and Crazy Hand have access to 17 potential OHKO moves on Intense difficulty in Brawl (14 on Very Hard difficulty in Melee), although some of them need multiple hits to connect to KO at 0%. This also results in their combined attacks occasionally being two OHKO moves.
    • 86% of Porky Minch’s moves (6 out of 7) and 80% of Rayquaza's (8 out of 10) are potential one-hit KO moves. However, Rayquaza's OHKOs are nearly always situational.
    • Every main boss in Brawl (10 total) is capable of OHKOs under certain conditions, at least on Intense difficulty in the Subspace Emissary or Classic Mode. In Boss Battles, however, only 7 maintain this power.
  • The most powerful moves in the Smash series are Tabuu's Off Waves (waves and contact with his body) on Intense difficulty in the Subspace Emissary and Boss Battles, and the Ultimate Chimera's bite in Brawl. Both these attacks are the most damaging moves in absolute, dealing 100%-200% damage, and have immense knockback. Off Waves are so strong to OHKO any character even on the Easy difficulty of the Subspace Emissary and Boss Battles (in the second case it is situational, but guaranteed on Normal and above).
  • Brawl introduced the trend of "final bosses" having extremely powerful attacks that feature waves in some form, and are usually an OHKO (on higher difficulties only, except for Winged Tabuu). These include Tabuu’s Off Waves, Master Core's Blast Waves and Galeem's Lens Flare (this one only situational).
  • Master Core’s final explosion on 8.0 difficulty or above is the only OHKO that never KOs the player, since the battle is already won before the hitboxes land.
    • Duon's Vacuum Spin, some of Porky Minch's attacks', contact with Porky Bots, Galleom's Tank Rush and Tank Rush & Slam can hit the player after the boss is defeated (with OHKO power on the higher difficulties) but, since the battle is already won, the player can never be KOed. However, the character could still be severely damaged in Boss Battles, turning successive hits in almost guaranteed KOs.
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