Jin Bubaigawara

Age: 31
Birthday: May 10
Height: 178 cm (5'10")
Quirk: Double

Jin Bubaigawara, also known by his villain alias Twice, is part of Shigaraki's League of Villains. He has been an antagonist in the Forest Training arc and Overhaul arc. His quirk lets him make 2 duplicates of anything he pleases. He refuses to make doubles of himself due to trauma.

During the League of Villains' battle against the Meta Liberation Army, Twice realizes that he is the real him, and cures his trauma. Because of this, he is now able to make 2 duplicates of himself, and those duplicates can make more duplicates, resulting in infinite duplicates.

During the Paranormal Liberation Front's battle against hero society, his friend Hawks reveals that he is a mole and truly is a hero. Hawks offers to arrest Twice and help him once he leaves prison. Twice does not take the offer, and starts a battle with Hawks. Hawks reluctantly kills Twice, because he thinks Twice is too big of a threat to be left alive.

(Source: Boku no Hero Academia Wikia)