The Who's-Who Pirates were a short-lived crew commanded by Who's-Who before he abandoned them for the Beasts Pirates. Almost nothing survives about the group beyond its leader and a cat motif that some followers carried into his later career.
The Who's-Who Pirates formed around their captain, Who's-Who, during a period before he rose through Kaidou's organization. The crew appears only in supplementary material, and Who's-Who stands as its sole confirmed member. King later acknowledged that his fellow officer had once helmed a band of his own.
Because the captain had previously ranked among the deadliest agents of CP9 and afterward climbed to a top post within the Emperor-led Beasts Pirates, observers assume his earlier crew carried real menace. Concrete details about their power, numbers, or exploits, however, never surfaced.

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Who's-Who founded the outfit after breaking out of prison, but Kaidou eventually drew him into the Beasts Pirates, leaving the original crew's fate murky. A portion of his old followers stayed at his side as a cat-themed retinue known as "CAT'S." The group holds the distinction of being the second pirate crew in the series built around a feline theme, following the Black Cat Pirates.
Who's-Who is a former CP9 agent who rose to a top post within Kaidou's Beasts Pirates, and before that he captained his own short-lived crew, the Who's-Who Pirates.
Who's-Who founded the Who's-Who Pirates after breaking out of prison, some time before Kaidou drew him into the Beasts Pirates.
The Who's-Who Pirates' fate is left murky once their captain joined the Beasts Pirates, though a portion of his old followers stayed at his side as a cat-themed retinue known as CAT'S.
The Who's-Who Pirates hold the distinction of being the second pirate crew in the series built around a feline theme, following the Black Cat Pirates.
King, a fellow officer of the Beasts Pirates, acknowledged that Who's-Who had once helmed a band of his own, the Who's-Who Pirates.
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View on FandomThis content is original writing by Daddy Jim Headquarters based on the One Piece anime series, manga, and official materials. Episode and chapter references are cited where applicable.
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