Zack is a vulgar and chaotic man. He's temperamental and prone to fits of rage, and is shown to be violent. He's unable to control his murderous impulses and in general comes off as impulsive. When he's in a murderous state, he becomes your typical crazy serial killer; bloodthirsty, ruthless and eager to kill. Zack hates lies and values honesty. He's not used to receiving kindness and tends to get upset whenever anyone does anything nice for him. Uneducated. incredible survival instinct.