Despite his faults, Moe often expresses genuine love and sentimentality, suggesting that he may not be as gruff and rude as he appears. His personality is often defined by a gruff, irritable exterior that masks a deep loneliness, low self-esteem, and a surprisingly tender side, particularly towards children. He is short-tempered and prone to outbursts of anger and violence, but this tough facade is a defense mechanism for his hidden depression and unfulfilled desire for companionship.