Who's-Who

Who's Who is a member of the Beasts Pirates, being one of the six strongest Headliners known as the Tobiroppo.

Appearance
Who's Who is a tall man with notably long legs. He has a large mane of wild light hair that goes down to his waist. He wears a dark mask over the top of his head down to his nose that obscures his eyes, and has two long, dark upward-curving horns protruding from the side of his head. He wears a dark jacket that exposes his bare chest, which has a large tattoo on it, and also wears dark pants and shoes. In his first appearance, he was shown smoking a cigarette.

Personality
Who's Who seems to be a blunt man who gets annoyed easily, in particular towards Ulti and Page One's squabbling. When Ulti wished death on Queen, Who's Who quickly brought up the question of which Tobiroppo would be promoted to an All-Star to succeed him. He seems to heavily respect Kaido, becoming serious and shocked along with his peers when Ulti spoke rudely about their boss.

Abilities and Powers
As a member of the Tobiroppo, Who's Who is considered one of the most powerful Headliners in the Beasts Pirates, with only Kaido and the All-Stars ranking above him.

Weapons
Who's Who is seen carrying a katana sword in his right hip, letting it rest beside him when sitting down. It's unknown how skilled he is with it.

Wano Country Arc
Who's Who and the other Tobiroppo members arrived at Onigashima during the Fire Festival. Kaido had them brought into his fortress, where they waited for him. Ulti expressed her desire for Queen to die, and Who's Who wondered which of them would take his spot if that happened. When this discussion caused Ulti and Page One to start arguing, Who's Who told them to be quiet. Ulti then insulted Kaido as they awaited the meeting, causing the other Tobiroppo to rebuke her.

Trivia

 * Who's Who is possibly named after the card game of the same name invented by games scholar David Parlett, fitting with the card game-themed names of the Headliners.