A giant, gloved, floating hand that serves as a recurring antagonist and final boss in the Super Smash Bros. games. His role in the universe is not entirely clear, though it's heavily implied that he was rather involved in its creation.
He is often seen with his left-handed counterpart, Crazy Hand, who began appearing from Melee onward. In Brawl, both are forcibly subordinated under Tabuu in the Subspace Emissary, while in Ultimate, he is an unwilling subordinate of Galeem in World of Light.
He gains a monstrous power-up form in 3DS and Wii U called Master Core.