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)
• Knockback may be insufficient if the attack had been used previously.
• They are essentially normal attacks, so they can be blocked or dodged as usual.
• 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 (the largest tournament legal stage) 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. (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 sometimes a One-hit KO.)
• Corneria's cannon laser shots. (Multiple Hits)
• A Pitfall against a Wario using the Wario Bike.
• Marth's Critical Hit Final Smash.
• Wario-Man's fully charged Wario Waft.
• Luigi's Fire Jump Punch inside his Negative Zone Final Smash, but only if used on the ground.
• The Dragoon.
• Puff Up (Jigglypuff's Final Smash) when Jigglypuff shrinks.
• Tabuu's Off Waves (on Normal or higher difficulties in SSE). (Very Hard and Intense in Boss Battle mode)
• Getting crushed in the Subspace Emissary.
• Getting hit by the bow/front of the Pirate Ship.
• Getting hit by a walking Bob-omb while using Fox's reflector. (only in SSB)
• Jigglypuff when its shield breaks.

Variables

• Game and Watch's fully charged Oil Panic, with Ness's PK Flash, or another strong projectile.
• The First lone spike on Rumble Falls.