Merlin

Merlin the Magician is a wizard who originally lived in Camelot (Movie Sword in The Stone) but in Kingdom Hearts Camalot must have been destroyed for he was commisoned by King Mickey to help Sora' Donald, and Goofy with their magic. In the first game he lives in Traverse Town but never appears in Kingdom Hearts: Chain of Memories and in Kingdom Hearts 2 he lives in Hollow Bastion. In Kingdom Hearts he lets players practice magic in the magic arena or access to the cavern or "secret waterway". In Kingdom Hearts 2 he is the only character in Hollow Bastion with a home that is seen yet in Kingdom Hearts Leon and Yuffie share a room in Traverse Town's hotel while Aerith had her own room.