A One-Hit KO (or abbv. OHKO) is a very strong hit that can KO the enemy at 0% damage. However, almost all of the so-called OHKOs are highly conditional; they all share the following restrictions:
- The opponent does not tech, DI, momentum cancel, or crouch cancel.
- There is no wall to absorb the knockback.
- Knockback may be insufficient on very large stages (e.g. Hyrule Temple, New Pork City, 75m.)
- Knockback may be insufficient if the attack had been used previously. (due to Stale-Move Negation.)
- Knockback may be insufficient if the attack had been used on a heavy character.
- The opponent is not giant and/or metal.
- The damage ratio is on 1.0 and no handicaps.
- The opponent does not roll, dodge, air dodge, Shield, or Perfect Shield.
The typical rule of One-Hit KO's is knocking opponent's at 0% from one side of Final Destination to the opposite Blast line, resulting in a KO.
Examples
- Roy's almost fully or fully charged Flare Blade.
- A Reversed Aerial Warlock Punch
- Beast Ganon (If the whole Final Smash hits).
- Marth's Critical Hit.
- Wario-Man's almost fully or fully charged Wario Waft.
- Mr. Game & Watch's fully charged Oil Panic absorbing strong projectiles. (Such as three PK Flashs)
- Tabuu's Off Waves (on Normal or higher difficulties in SSE). (Very Hard and Intense in Boss Battle mode)
- Tabuu's Golden Bracket move (Intense difficulty)
- A Side smash done by a Home-Run Bat.
- The Dragoon.
- The first spike on Rumble Falls (easily teched).
- A Pitfall against Wario using the Wario Bike.
- The Ultimate Chimera's bite. (In Stamina Mode, it's not always a One-hit KO).
- Getting hit by a walking Bob-omb while using Fox's reflector in SSB.
- Breaking Jigglypuff's shield. (counts as SD)
- Getting crushed in the Subspace Emissary.
- Suicune's Aurora Beam.
- Deoxys' Hyper Beam.
- Light Arrow, depending on the field size, obstacles, or number of targets hit. (more targets equals less knockback).
- Roy countering a strong attack.
- Getting hit by a Banzai Bill on Princess Peach's Castle.
- Corneria's cannon laser shots.
- Getting hit by a Klaptrap on Jungle Japes (doesn't One-hit KO heavyweights).
- Getting hit by a Bumper.