An instant KO is a type of KO which occurs instantaneously and in-place, without the fighter passing a blast line or being launched at all. A character suffering an instant KO will disappear into a colorful starburst explosion, then respawn as normal (or not respawn, if no stocks remain). Instant KOs were introduced as stage hazards in Super Smash Bros. Brawl, and a greater variety of attacks and conditions causing instant KOs were added in Super Smash Bros. 4 and Super Smash Bros. Ultimate. Ultimate also introduced instant variations of Screen KOs. Several instant KOs require the opponent to be at a certain damage threshold in order to be instantly KO'd, otherwise they will be launched as usual.
In Super Smash Bros. Brawl
In Super Smash Bros. 4
Although Pirate Ship is a returning stage in for Wii U, the crushing hazard was removed. Players caught between the rock and the ship's hull will instead be launched and ricochet off the rock.
In Super Smash Bros. Ultimate
Playable characters' standard moves
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