One-hit KO

A One-Hit KO (or abbv. OHKO) is a very strong hit that can KO the enemy at 0% damage, but basically all of them are highly conditional, all sharing 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 opponent does not 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 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, or getting attacked by a Klaptrap on Jungle Japes (This is not technically a "hit"; rather, the victim is trapped and dragged off-screen.)
• The Ultimate Chimera's bite. (In Stamina Mode, it's not always a One-hit KO.)
• Corneria's cannon laser shots. (Multiple Hits)
• A Pitfall against a Wario using the Wario Bike.
• The Dragoon.
• 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)
• Getting hit by a walking Bob-omb while using Fox's reflector. (only in SSB)
• Jigglypuff when its shield breaks. (This is not technically a "hit" either; rather an SD)
• Getting hit by Suicune's Aurora Beam
• Getting hit by the bow/front of the Pirate Ship.

Variables

• Game and Watch's fully charged Oil Panic, with Ness's PK Flash, or another strong projectile.
• Getting hit by the first spike on Rumble Falls.