Well, here's a little something I dug out of my back-catalogue of fanfic OCs.

Name: Kazé

Age: 14

Gender : Male

Appearance: [url=http://fav.me/d5l5rft]Short and slight with brown eyes and neck-length brown hair with a white streak in it down the left side of his face; the result of the damage being done to his body by his Heartless side. Wears a Black Robe he stole from his replica after defeating it.[/url]

Personality: Rendered slightly reclusive after some of his experiences, but still light hearted and jocular.

Equipment / Abilities: Has a black Keyblade he dubbed the "Raven's wing" purely on the basis of its design; the blade, head and hilt guards all bear some manner of wing-like motif. He also has access to basic magic, in particular fire, blizzard, thunder and cure spells.

Extra: Taifu: Kazé's “evil” half, the result of his blood being tainted by Heartless matter. Eschews the Keyblade for more powerful magic. Typically released if Kazé is knocked out during battle. Otherwise he's just a voice in the teen's head.

Backstory: Born and raised on the Destiny Islands, Kazé managed to miss its destruction by the Heartless and reconstruction, but only because he'd been kidnapped some time before and locked inside of a virtual world by Organisation XIII as part of an experiment.

Following his release, but still operating under a fabricated identity, he helped Sora and his friends halt a resurgent Heartless threat and undo the damage caused, and in the process regained his old memories.

However, one of the battles he fought during this time left him tainted; darkness released by a recently destroyed Heartless entered an open wound on his arm, slowly corrupting him, and causing him to leave his home again and go wandering the worlds in search of a solution...