Karl is depicted as a man who is sympathetic, and possesses polite manners when he meets people and opponents alike. However, this masks his true, darker nature as a liar with traits that fit for typical yangires that is immediately revealed once his foes are distracted: Karl is manipulative, psychopathic, murderous, and often if not always, unpredictable. He does miss a woman by the name Rachel, which has red, long and fluffy hair.