'Spider' Brown and eventual mortal enemy of his former commanding officer, Ike Sloan. Paintings of crying clowns and dogs playing poker. Military Mark IV Cyber-Commando' and 'No doc. As he explains to a scientist and later to Dr. Colt is also quite humble and refuses to take any credit for being a hero. Rex is also prone to use sexual innuendo, such as 'that's my kind of blowjob' and 'guess I blew my load' after using explosives to dispatch his enemies. While the hero, Rex is also very impatient and enjoys killing, such as when he taunts fallen enemies to 'send for a medic so I can kill him too!' Rex has a sarcastic and humorous personality, using many one-liners and cynical remarks.