4th Grade Male Rabbit

 4th Grade Male Gray Rabbit is an unnamed background character. He has had one speaking role in the episode Arthur Goes to Camp and ever since that episode he has been used as a background chracter. There is a chance that he use to go to Mighty Mountain at some point and then was transferred to Lakewood soon afterward. He is also a member of the Tough Customers and has been seen sitting with them at the cafeteria and any further involvement is unknown. He is also seen hanging out with his friend 4th Grade Female Cat.

Appearance
4th Grade Male Gray Rabbit is tall rabbit that wears a purple shirt, brown khakis with a brown belt, and red and white sneakers. In the episode Arthur Goes to Camp he wore a black shirt with an "H" and was at the rival camp, Camp Horsewater.