Assassins needs more secret and mystery about their personality, so they are need hood or mask, or both of them. This picture help for you, that you can see some example for the hood, and for the mystery of your assassin figure. (But you always must have logical thinking, because the fourth variation is looks like cool, but when the assassin is fight, he has a blind spot for his left side. But if he hasn't got left eye, this design is okay for the hood.)