Tweek Tweak is one of the kids in South Park. He was also one of Kenny's replacements when he died. His shirt isn't buttoned correctly, and he wears blue jeans. His blond hair is spiky and unkempt. He's really hyperactive and addicted to coffee. His coffee addiction makes him very paranoid and anxious. His parents, Mr. and Mrs. Tweak believe that coffee has nothing to do with his mental state, and think it's the result of ADD.