ONe name springs to mind: Johnny the Homicidal Maniac. A former knight in training in a space opera setting, Johhny snapped under the pressure and had a psychotic episode, and developed Turrett's Syndrome, as well as a firm belief that he was a Rooster with Special Ops(explosives) training. He wore a golden Tengu mask(a la Hauer in Fatal Fury: the Motion Picture), carried around a Rocket Launcher(later upgraded to the Cadbury Bunny Launcher and eggs, which consisted of shoving a Cadbury egg up that stupid rabbit's arse and pointing it towards the enemy, at which point he'd boot the rabbit in the head, ejecting the Cadbury Egg, which was in reality a highly dangerous god-killing explosive), and would burst into fits of obscenity, punctuated with him saying "Cok-a Doodle" followed by the profanity.