The One Piece Card Game, published by Bandai, has built a devoted following since its launch, and Celebration Packs have become a favorite way for collectors to add special printings to their binders. Released as promotional and celebration product, these sets gather alternate treatments and exclusive cards that rarely appear in standard booster releases. They are remembered by many fans as a snapshot of the game's growing community, bringing together characters and artwork that celebrate the long-running Straw Hat story and its wider cast. Card #10, Who's.Who, is a promotional card that draws on the series' memorable characters and the playful tradition behind the title's own nod to the iconic Who's Who style of character gathering. Collectors seek it for its fan appeal, its place within a limited celebration release, and the way it captures the energy that made this set a talking point at its time.