V is a French guy that has SUPER NINJA SKILLS and uses them to kill certain people. He also likes to blow buildings up, and he is a member of the ABCDEFGHIJKLMNOPQRSTUVWXYZ.
He was born with the other letters, but abandoned them, but came back, only to abandon them again, but eventually stayed for good. This is due to split personality disorder. He was eventually cured of this though, because R smacked him enough.