I'm waffling a little on whether I should or shouldn't have a double of Tyki. One, he's already sort of evil and two, he won't be able to kill his double and his double won't be able to kill him. Not to mention he's not exactly going to try to restrain it at all. He's out to impress no one at the moment. A lot of his CR left. The only one that will be capable of it is currently Kanda Yu.

Besides, it would take far too much effort on his part to try to stop it.... orz

His double will be far more aggressive, act less human than Tyki does seeing as Tyki still doesn't give into his Noah entirely. It'll want to kill and kill for pleasure without any restraint on who or what they are.