-Nasty Pants, to Frank Heffley and Robert Jefferson . Nasty Pants is a five year old who used to frighten Greg and Rowley when they were going past his neighborhood while going to school. Greg and Rowley started taking a short-cut to escape the bullying of him. Soon they got fed up of Nasty and told Mr. Roy about it,he said he can't help because Nasty doesn't goes to their school,so they told there fathers and they went to Nasty's house. Nasty's mother said that he is only 5 years old and sometimes gets wounded up a little.