Primary antagonist of [i][[Kingdom Hearts II]][/i]. 

No. I (the Superior) of [[Organization XIII]]. 

[spoiler]He is the Nobody of [[Master Xehanort]].[/spoiler]

Visible Features: dark skin; yellow eyes; silver hair swept back and parted thrice at the top; pink/red laser beams ("ethereal blades"), either extending from palms or floating
ゼムナス