Zenn is a heartless of solitude. Despite his peaceful nature, he is a master keyblade weilder. Other keyblade weilders have a habit of attacking him on sight because he is a heartless. He normally dissapears before they can even reach him. He has been in situations before when he has no choice but to fight. He normally defeats most opponents without even moving. Due to his merciful nature, he leaves them alive, barely.
This MOC is the bees knees! (Even if they ARE inverted) I've never seen a heartless before, but this guy has inspired me. Xalos #4 shall be a keyblade weilding heartless, also with a gun =]. the technical detail is quite intricate, considering how spindly he is.