Twice

Jin Bubaigawara, commonly known by his villain name, Twice, is a villain from the manga/anime series, My Hero Academia. He is a villain affiliated with the League of Villains and its Vanguard Action Squad. Since his debut in the School Trip Arc, he has become one of the few recurring villains in the series.

Personality
Prior to joining the league, Twice seems to suffer from DID (Dissociative Identity Disorder), from a result of creating clones of himself. At the end of the day, he continues to wonder whether he's the original or just another clone, as the clones ended up killing each other.

When he joined the league, he gained a bit of an active personality in him. He also has a habit of contradicting himself, as he insulted Dabi at one point, then immediately praises him a moment later.

Powers and Abilities
Double: Twice's Quirk allows him to create clones of people and things. Before creating clones, he requires the measurements of the person he plans to copy, before he can actually create clones of said person. The clones themselves carry over the exact appearance and personality of the original person, even copying their Quirks. When a clone gets destroyed, they turn into a liquid substance and melt away.

It should be noted that Twice has no control of the clones he creates. This was shown when he created clones of himself and the clones eventually turned against each other, killing themselves.