Deadpool (SKW)

Deadpool a Marvel Comics character who does not appear in the main story, but instead serves as the Datalog writer, just like Jiminy Cricket in Kingdom Heats 1, 2, and Chain of Memories.

Personality
As a side effect to the experiment that disfigured his skin, but gave him his rapid healing/ regeneration powers, not unlike Wolverine, Deadpool is "comically insane" with a habit for breaking the "fourth wall", and including pop-culture references and other inside jokes in the Datalog he writes about the Superhero Keyblade Wars.