Grade 3rd
Gender Male
Animal Cat
Hair color Brown
Family Leah MacGrady (grandmother)
Martha (great aunt)
Book debut Arthur and the Pen-Pal Playoff

Justin is Mrs. MacGrady's grandson. He is a third grader on the other side of the state from where Arthur lives. He likes playing basketball, and occasionally comes to Elwood City to visit his grandma. Mrs. MacGrady arranged for Arthur and Justin to be pen pals, that way they could meet each other.

Physical appearance

Justin is a cat with a tan complexion. He wears a white shirt, blue shorts, white socks, and blue and white sneakers. He has brown hair.



Community content is available under CC-BY-SA unless otherwise noted.