One-hit KO

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, or crouch cancel.
• There is not a wall to block 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. (Stale-Move Negation.)
• The opponent is not giant and/or metal.
• The damage ratio on 1.0 and no handicaps.
• The opponent does not Shield or Perfect Shield.

The rule of Final Smashes as One-Hit KO's is if they can kill opponent's at 0% from one side of Final Destination to the other and resulting in a KO.

Examples

• Roy's almost fully or fully charged Standard Special Move, Flare Blade.
• A forward Smash Attack done by a Home-Run Bat.
• Getting eaten by the Fish on Summit or a Bulborb on Distant Planet. These are not technically "hits"; rather, the victim is trapped and dragged off-screen.
• The Ultimate Chimera's bite. (In Stamina Mode [and sometimes other modes], it's not always a One-hit KO.)
• Corneria's cannon laser shots. (Multiple Hits and it's possible to survive if rarely)
• A Pitfall against a Wario using the Wario Bike.
• The Dragoon.
• Beast Ganon
• Marth's Critical Hit Final Smash.
• Wario-Man's fully charged Wario Waft.
• Jigglypuff's Puff Up when Jigglypuff shrinks.
• Getting crushed in the Subspace Emissary.
• Tabuu's Off Waves (on Normal or higher difficulties in SSE). (Intense in Boss Battle mode)
• Tabuu's Golden Bracket move (Intense difficulty)
• Getting hit by a walking Bob-omb while using Fox's reflector. (only in SSB)
• Breaking Jigglypuff's shield. (counts as SD)
• Getting hit by the bow/front of the Pirate Ship.
• Getting hit by the first spike on Rumble Falls.
• Getting hit by a Banzai Bill in Princess Peach's Castle.

Variables

• Mr. Game & Watch's fully charged Oil Panic absorbing Ness's PK Flash, or another strong projectile.
• Light Arrow, or Blue Falcon (depending on the field size, obstacles, or number of targets hit (more targets equals less knockback).
• Suicune's Aurora Beam.
• Deoxys' Hyper Beam.
• Getting caught in a Sacrificial KO. Not technically a hit, the opponent is trapped and dragged off-screen with the user.
• Mr. Game & Watch hitting a 9 with his Judge attack.