Editing Sacrificial KO

A '''sacrificial KO''' (also called a '''kamikaze''', a '''suicide''' or a '''trade-off''') is a technique that has appeared in all installments of the ''{{b|Super Smash Bros.|series}}'' series, where one character [[KO]]s both themselves and an opponent with a single move. A majority of sacrificial KOs involves attacks that can [[grab]] opponents in midair, though a number of other attacks, such as [[stall-then-fall]] aerials and self-damaging attacks with self-knockback, can also be considered sacrificial KOs. Most sacrificial KOs result in the user [[self destruct]]ing, either by directly KOing them alongside the opponent or by preventing them from potentially returning to the stage.

While sacrificial KOs returned in ''Smash 4'' with the same functionality as before, version [[1.0.4]] nerfed a majority of these KOs by causing the initiator to be KOed before their victim, potentially allowing the victim to return to the stage and making sacrificial KOs much less useful for winning matches. Before ''Ultimate'', the only exception to this rule was [[Ganondorf]]'s [[Flame Choke]], as it is more commonly used as Ganondorf's only decent horizontal recovery option, and would see little to no use off-stage if it caused Ganondorf to be KOed first. In ''Ultimate'', Flame Choke was nerfed to KO Ganondorf first; however, every sacrificial KO that used a [[meteor smash]] was made more reliable, often KOing the opponent before the initiator, due to meteor smashes KOing characters before they hit the bottom blast line if the knockback is strong enough.<ref>https://twitter.com/notty_jirachi/status/1073305289519116289</ref>

!Character!!Applicable games!!Execution!!Last-stocks behavior

|If the platform is rising or falling towards the top or bottom blast line, Sudden Death always occurs. If the platform is moving towards the side blast lines, whoever is closest to the blast line will always lose. The character that landed the grab in a losing position can evade a loss by opting to [[throw]] the other character instead.

|rowspan=2|[[Bowser]]

|Bowser always loses.

|"Diddycide" is done by using [[Monkey Flip]] on an airborne opponent and letting the pair fall to the blast line. As Diddy jumping during the grab will [[meteor smash]] the opponent, this Sacrificial KO is regarded as impractical.

|In ''Brawl'', Diddy always wins. In ''Smash 4'' and ''Ultimate'', Diddy always loses.

|"Kongocide" is executed with Donkey Kong's forward throw, carrying himself and his victim off the stage. This is typically not used as a straight sacrificial KO, as the technique KOs Donkey Kong first and the move can be easily mashed out of; it is generally more useful to throw opponents under or against the stage for a [[stage spike]].

|Unpredictable in ''Brawl'', potentially causing a win, a loss, or Sudden Death for Ganondorf. It is hypothesized this has to do with how the upside-down victim's model is located in relation to the right-side-up Ganondorf's during their plunge. In ''Smash 4'', Ganondorf always wins. In ''Ultimate'', Ganondorf always won in Version 1.0.0, but now always loses.

|Kazuya always loses.

|In ''Brawl'', Sudden Death always occurs. In ''Smash 4'' and ''Ultimate'', King Dedede always loses.

|King K. Rool always loses.

|"[[Kirbycide]]"s are the most famous form of sacrificial KO. Using {{b|Inhale|Kirby}} on enemies and walking off-stage (or inhaling them in mid-air, in ''[[SSB]]'') is highly effective, and in ''Melee'', Kirby can even survive after larger opponents are KO'd out of his stomach; Kirby's long recovery can also prevent him from being KOed in the process, though the efficiency of these KOs was nerfed in later games, with ''Brawl'' generally causing Sudden Death, and ''Smash 4'' causing Kirby to almost always lose, though a Kirbycide with Jumping Inhale will cause a Sudden Death. As such, it is more practical for Kirby to release his opponent before crossing the blast line, then performing another action on them if possible, such as a [[footstool]].

Kirby can also use his forward, back, and up throws as Kirbycides in ''Melee'', though the former two can be escaped via mashing (leaving Kirby to [[self-destruct]]), and the last is difficult to execute; the back and forward throws cannot Kirbycide in later games, and if the floor underneath Kirby vanishes while he performs the throw, he will automatically let go of the opponent while throwing them. Kirby can also use the sacrificial KOs of Dedede, Wario, and K. Rool by copying their abilities, with identical behavior involving the last stocks.

|Inhale: Kirby almost always wins in ''Melee''; almost always Sudden Death in ''Brawl''; almost always loses in ''Smash 64'', ''Smash 4'' and ''Ultimate''<br>Forward and back throws: Kirby always wins<br>Up throw: Kirby always loses in ''Melee''; [[port priority]] determines the victor in ''Brawl''.

|{{SSBB|Meta Knight}}

|{{SSBU|Mii Brawler}}

|"Ridleycide" is executed by using [[Space Pirate Rush]] on an opponent while off-stage, causing both to plummet downwards. However, it is very risky to use as it can be escaped from, although Ridley can throw his opponent beneath the stage if he is close enough.

|"Robincide" is executed by using [[Nosferatu]] on an opponent while off-stage, causing both to fall downwards slowly. This is impractical, as it is hard to land, can be mashed out of, and can only be used four times per tome (three in ''Ultimate'').

|Wario always loses.

!Character!!Applicable games!!Execution!!Last-stocks behavior

|The usage of self-damaging explosives in close ranges is a sacrificial KO, though such instances are often unintentional. Items such as [[Motion-Sensor Bomb]]s, [[Bob-omb]]s, [[Gooey Bomb]]s, [[Electrode]], and other explosives can cause this, as can items spawned by characters, such as Snake's [[Hand Grenade]]s, Duck Hunt's [[Trick Shot]], or Steve's [[TNT]].

|Depends on who suffered more knockback. Sudden Death if both are KO'd at the same time.

|{{SSBU|Chrom}}

|Chrom's up special move [[Soaring Slash]] contains a powerful meteor smash, which can reliably KO opponents at any percentage, although Chrom must sacrifice his stock to meteor smash with the move provided there is no ledge to grab, as both characters will plummet to the bottom blast zone. This is called "Chromicide", and is very similar to Aethercide, due to Soaring Slash being incredibly similar to Aether.

|Chrom always wins as long as the falling slash deals enough knockback. After update 2.0.0: this was made more difficult to do due to a higher threshold for sufficient knockback.

|"Cloudcide" is executed with [[Climhazzard]]. If Cloud uses the downward slash offstage and hits an opponent with the meteor smash hitbox, both characters will plummet to the bottom blast line. In certain stages built with the [[Stage Builder]], Cloud can use [[Omnislash / Omnislash Ver. 5]] to plummet to the blast zone as the victim and Cloud dive.

|In ''Smash 4'', Cloud usually loses but may cause Sudden Death or even allow Cloud to win if he is low enough when he hits the opponent or if either character has high enough damage.

 

In ''Ultimate'', Cloud always wins as long as the downward slash deals enough knockback.

|Incineroar always wins.

|Sudden Death always occurs for Great Aether. Ike almost always loses using Aether in ''Smash 4''; always wins in ''Ultimate'' as long as the falling slash deals enough knockback.

|{{SSB4|Little Mac}}

|Using [[Jolt Haymaker]] offstage to hit an opponent can result in the foe getting KO'd at the side blast line due to the move's high knockback scaling. Little Mac is forced into helplessness once Jolt Haymaker is initiated, and unless the opponent is at medium-high percentages, this results in a net loss for Little Mac if his foe survives the hit and has a good recovery. Results in only Little Mac self-destructing if he mistimes the attack or the opponent air dodges. One of the custom special moves, Grounding Blow, can also act similarly to Cloudicide or Aethercide, as it meteor smashes the opponent while also having Little Mac plummeting.

|King Dedede can perform another type of Dededecide via [[Super Dedede Jump]]'s falling portion, which is a [[meteor smash]] that launches enemies downward at the same speed at which King Dedede himself falls.

|In ''Brawl'', King Dedede always wins. In ''Smash 4'', King Dedede usually wins, but certain situations can cause him to cross the blast lines before the opponent, typically if they are at relatively low percents. In ''Ultimate'', King Dedede always wins, as long as the falling portion deals enough knockback.

|[[Soaring Axe Kick]]'s heel can drag down opponents along with them when it is used off-stage, resulting in both of their stocks lost. [[Head-On Assault]] can be used the same way, either offstage or after a [[jab cancel]]. It should be noted that using either special move while facing and positioned close to a ledge is technically not a sacrificial KO, as the Brawler will grab the ledge while their victim is left to plummet into the abyss. Note that in ''Ultimate'', the descending attack of Soaring Axe Kick is optional.

|Dependent on the height, damage percentage, and falling speed of the Brawler and their victim in ''Smash 4''. In ''Ultimate'', Mii Brawler always wins as long as the falling portion of both moves deals enough knockback.

|Much like Climhazzard and Aether, the descent of [[Stone Scabbard]] will meteor smash opponents, but the Mii Swordfighter can be KO'd first if they do not grab the ledge after connecting the move.

|[[Pyra]]

|Pyra can use [[Prominence Revolt]] to attempt a sacrificial KO by dragging the opponent down with her. However, the knockback inflicted by the descending hit is unusually low, to the point that opponents can usually make it back to the stage. Opponents with a poor recovery however will sometimes be [[gimp]]ed.

|[[Sephiroth]]

|Shulk is usually KO'd first with Back Slash. Air Slash is dependent on the positioning. In ''Ultimate'', Shulk can act after a Back Slash, albeit not for a long time.

*Risky [[meteor smash]]es or off-stage aerials generally do not count as sacrificial KOs; the term implies that it is the move that KOs the user, not the fact that the user could not recover after using the move. It should be noted that with [[stall-then-fall]] attacks the user is nearly guaranteed to be KO'd unless they perform the aerial very high up.

*Though very uncommon due to how it's set up, characters with throws that send them and their opponents briefly above the upper blast line ([[Charizard]], [[Kirby]], and [[Meta Knight]]) can be used to perform a Sacrificial KO if an item or projectile acts on the characters at the apex of the throw. An example is if [[Mega Man]]'s [[Crash Bomber]] is attached to either character and explodes at the right time during the throw.

While rare due to a relatively limited character pool, sacrificial KOs have their own rules within tournaments: if both the victim and initiator are KOed on their last [[stock]] because of a sacrificial KO, the [[results screen]] is ignored and the initiator is deemed the winner. This rule, however, has been disputed, with some players claiming that the winner of the game should be determined by the game and not by observers.

Additionally, as mentioned earlier for ''Smash 4'', every character except Ganondorf releases their opponent after they SD, allowing some characters to return to the stage, making this ruling even more questionable. One rule that is seen in some tournaments states that if both players die at the same time (whether a sacrificial KO or not), a tiebreaker match (usually 1 stock, 3 minutes) is to be played on the same stage played before to determine the official winner of the match, ignoring sudden death altogether. Another rule that forgoes tiebreaker matches favors the initiator if the KO results in Sudden Death, but the win is otherwise awarded to whoever is declared the winner on the results screen.