When does Zexion appear in Kingdom Hearts?

Answer by  ladybird (96)

Zexion is an antagonist in the game series. He first appears in Kingdom Hearts: Chain of Memories. (Spoilers: He was a lab assistant to Ansem prior to the start of the first game--at that time his name was Ienzo. During their research on the Heart, Zexion suggested the creation of the underground lab for their work.)

Answer by  DawnDove (76)

Zexion is a Nobody that is a boss battle in Kingdom Hearts: Chain Of Memories. He also appears in 358/2 Days when Xion first joins the Organization. In order to fish Zexion in Chain Of Memories, you must play as Riku to battle him. He holds a book and has hair covering one half of his face.