Setzer Gabbiani (セッツァー・ギャッビアーニ Settsā Gyabbiāni?) is a gambler who owns the Blackjack, the only known airship in the world. He is first encountered by the party after being tricked into kidnapping Celes Chere instead of Maria, the opera diva with whom he's enraptured. Capitalizing on Setzer's love of gambling and chance, Celes coerces him into a bet using Edgar's double-faced coin, the result of which is his joining the Returners and committing his airship to their service.
Setzer also makes a small appearance in Kingdom Hearts II, as the reigning champion of the false Twilight Town's Struggle tournament, where he fights with Roxas.