Super Smash Bros. series

One-hit KO

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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 sometimes known as "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 will KO 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:

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 (such as Roy's Flare Blade in every game featuring him).
  • 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

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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% are 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

Video

The following video demonstrates the main moves that KO at 0% in Smash Bros. for the Nintendo 64:

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 only the first hit connects, specifically characters not heavier than Jigglypuff.

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.

Items/Enemies

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.

Stage hazards

  • Rapid laser shots from the Great Fox on Corneria, as well as the turrets while the Great Fox is charging.
  • On Flat Zone, 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.
  • Banzai Bill's explosion on Princess Peach's Castle (if all hits connect).

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 the hits fail to lead into each other), 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.

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 boss attacks, with relatively few being standard moves of playable characters. On the higher difficulties of The Subspace Emissary, several boss attacks become invariable OHKOs.

Some notes:

  • In The Subspace Emissary, the player's gravity and falling speed are automatically increased up to 19% from normal Brawls, making KOs less likely.
    • It is also possible to use very strong flinch or launch resistance stickers to severely reduce knockback, although they are unlikely to protect from very powerful moves of OHKO power. This becomes more evident on the higher difficulties.
  • In Boss Battles, boss attacks are normally weaker, having slightly more than one half of their original speed and power (with some notable exceptions). This is done to partially compensate the fact that the player has only one stock and no continues, items or stickers. As such, almost none of the boss attacks which OHKO in Emissary will do so in Boss Battles, except for Tabuu' Off-Waves on intense.

Playable characters' standard moves

Final Smashes

  • Marth's Critical Hit.
  • 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).
  • 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 (first opponent only).
  • Samus' Zero Laser if all hits connect.
  • 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 fully charged.

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.

Items

  • The Dragoon.
  • A smash attack with the Home-Run Bat.
  • Touching Moltres's wings.
  • Suicune's Aurora Beam.
  • Deoxys's Hyper Beam (or touching its body), both the initial hit and the following multi-hitting laser.
  • Electrode's Explosion when smash thrown. If an Electrode fails to burst, it can still be picked up and smash thrown with guaranteed OHKO power.
  • 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.

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.
  • Corneria's laser beams.
  • Touching the hull of the Pirate Ship.
  • 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 bosses

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

  • Several of Rayquaza's moves at low health (25% or less):
    • Sweetspotted Dig, Ground Burst, Dash, and Air Dash.
  • 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.
  • Several of Porky Minch's moves:
    • Jump (sweetspot).
      • Lightning. On Intense difficulty a single hitbox deals more than enough knockback to OHKO, regardless of Porky's health.
  • 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) and Swoop.
  • 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.
  • Several of Porky Minch's moves:
    • Touching the Porky Bots sent out by Porky Minch.
    • Stabbing Flurry if most hits connect (always needs the last hit to land for a KO).
    • Energy Laser (both variants).
      • The airborne version deals a single hit of OHKO power.
      • The ground version circles multiple times (up to three on Intense difficulty), and two hitboxes landing deal more than enough knockback to invariably OHKO.
  • 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 (flames and head hitboxes).
  • 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.
  • Several of Tabuu's moves:
    • Shuriken Boomerang (first swing), Shark Blade (blade and Tabuu's body hitbox) and Chain of Light (on a single target).
    • Bullet Rain (second hitbox: the huge energy sphere). Both hitboxes landing will always OHKO on every difficulty.
    • Pinpoint Explosion. Due to perfectly horizontal knockback, this attack will always cause a guaranteed KO for poor recovery characters even on lower difficulties.

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). Due to perfectly horizontal knockback, this attack will always cause a guaranteed KO for poor recovery characters even on Easy difficulty.
    • Electrical Shield (sparkles and Tabuu's body hitbox). Due to perfectly horizontal or spiked knockback, this attack will always cause a guaranteed KO for poor recovery characters even on Easy difficulty.
      • On Easy difficulty only (Normal or below in Boss Battles), when the players touch the spark rings (far enough from Tabuu's body) they will simply flinch, but they can be sucked in repeatedly by a very powerful vacuum until they are KOed.
      • If the player is on the attack's endpoint, there is a small possibility that they will suffer multiple hits by the sparks before being sucked in, resulting in a guaranteed KO regardless of difficulty. However, this is quite unlikely, as they usually sustain a single hit.

The following will cause an OHKO on every difficulty:

  • Porky Minch's Lightning if most hitboxes land (at least two huge discharges). This variant of the attack is only used when 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.
    • Bullet Rain if both hitboxes land (highly damaging bullets and the huge energy sphere).
    • Off Waves (waves and Winged Tabuu's body hitbox).
  • 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.

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.
  • Several of Porky Minch's moves:
    • Stabbing Flurry if most hits connect (always needs the last hit to land for a KO).
    • Energy Laser (both variants).
      • The airborne version deals a single hit of OHKO power.
      • The ground version circles up to two times, and both hitboxes landing deal more than enough knockback to invariably OHKO.
  • 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:

  • Porky Minch's 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 (flames and head hitboxes).
  • 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.
  • Several of Tabuu's moves:
    • Shuriken Boomerang (first swing), Shark Blade (blade and Tabuu's body hitbox) and Chain of Light (on a single target).
    • Bullet Rain (second hitbox: the huge energy sphere). Both hitboxes landing will always OHKO on every difficulty.
    • Pinpoint Explosion. Due to perfectly horizontal knockback, this attack will always cause a guaranteed KO for poor recovery characters even on lower difficulties.

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, nearly always resulting in a double OHKO.
    • Golden Bracket (on a single target). Due to perfectly horizontal knockback, this attack will always cause a guaranteed KO for poor recovery characters even on Easy difficulty.
    • Electrical Shield (sparkles and Tabuu's body hitbox). Due to perfectly horizontal or spiked knockback, this attack will always cause a guaranteed KO for poor recovery characters even on Easy difficulty.
      • On Easy difficulty only (Normal or below in Boss Battles), when the players touch the spark rings (far enough from Tabuu's body) they will simply flinch, but they can be sucked in repeatedly by a very powerful vacuum until they are KOed.
      • If the player is on the attack's endpoint, there is a small possibility that they will suffer multiple hits by the sparks before being sucked in, resulting in a guaranteed KO regardless of difficulty. However, this is quite unlikely, as they usually sustain a single hit.

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

  • Porky Minch's Lightning if most hitboxes land (at least two huge discharges). This variant of the attack is only used when Porky has low health (25% or less).
  • 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).
    • Bullet Rain if both hitboxes land (highly damaging bullets and the huge energy sphere).
    • 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 (but not offstage), specifically characters not heavier than Lucas. It is possible to reduce the knockback by DIing, but it will still OHKO any onstage character as heavy as Zelda. Ironically, the chances to survive are higher it the player is closer to the blast lines (but not too near).
      • 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.

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 cannot 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. 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, though it can easily KO all lighter characters 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 its 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 low percents.

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 (only used if the player does not defeat it in time: about 45 seconds). Ironically, the chances to survive are higher if the player is closer to the blast lines.
  • The final explosion after unleashing the last Blast Wave (very small hitbox). However, it can never truly defeat the players as they have already won by the time the hitboxes land.

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.
  • The Deku Nut's explosion on a grounded target that cannot be stunned, such as Sandbag, or Kirby in his Stone transformation.

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

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.[1]

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 except Ultimate:

Trivia

  • Brawl features the most guaranteed OHKOs; however, the vast majority are from bosses.
  • 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.
  • At least one playable character from the Fire Emblem universe possesses a move with OHKO potential in every game. Other main characters appear as items with OHKO power (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.
  • 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 they will still OHKO under these circumstances. In Brawl, this includes Suicune's Aurora Beam, Marth's Critical Hit, the Ultimate Chimera's bite, and several boss attacks.
    • 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 any other boss or enemy in all the Smash games, with 14. His OHKOs are reduced to 12 on Intense difficulty in Boss Battles.
    • 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, which 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, 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, dealing 100%-200% damage and having immense knockback.
  • Master Core's final explosion on 8.0 difficulty or above is the only OHKO that will never KO 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.

References

  1. ^ The Results Screen is a FULLY PLAYABLE Stage? | Super Smash Bros. Ultimate
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