Moe is the bully at Calvin's school, mostly picking on Calvin himself. Even though he's not very smart, he makes up for it with his attitude and strength.Referring to call Calvin "Twinky".
Moe's history with Calvin has gone all the way back to the first book. Since then, Moe has pushed,shoved,demanded money,punched,and thrown dodgeballs at Calvin. The only time when Moe was actually scared of Calvin is when Calvin brought Hobbes to school. Hobbes then bit Moe, and he ran screaming histerically.