Despite his preoccupation with cleanliness, Levi is not very approachable. He rarely shows emotion, giving a cold impression to others. His manner of speaking tends to be very blunt, even insulting, and his comments are often coarse or inappropriate. He is not above provoking or belittling those who oppose or irritate him. His sense of humor tends toward the vulgar, insulting, and dark. All of this makes him unsettling to many. He holds an obsession with cleaning, called a ‘clean freak’.