Crazy Hand (SSBU)
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In Adventure Mode
Once the player manages to get the true ending's requirements, Crazy Hand and Master Hand help the player by creating a giant rift for the latter to enter and destroy 50 false characters.
In Classic Mode
Crazy Hand appears as a boss in Classic Mode. For the first time in the entire series, Crazy Hand has the ability to face to his left. Also for the first time in the series since Brawl's Boss Battles, Crazy Hand no longer has a stamina HP indicator, instead having a health bar akin to bosses from Subspace Emissary. This is beneficial, as Master Hand has his separate health bar as well, meaning that they no longer share the same pool of HP as they did in Smash 4.