Heavy weapons specialist CT-4001-136372-24551 aka ‘Heavy’ is one of the most colorful clone troopers aboard. It is possible that a slight defect in the cloning process is the reason why he is less obedient and efficient that his batch brothers. He is, however, very good at what he does, and his sense of self means he is more cautious and more likely to survive a battle than your average clone. Heavy seems particularly attached to E'tan for some reason.