Jack Weasel

4th Grade Male Rat is an unnamed character who debuted sometime during Season 1. He is seen mostly at lunch, the hallways, and the library at school. He is a minor character who seen in the background of many episodes. He spoke in the episode So Long, Spanky where at the pet store they were about to feed the Boa Constrictor. As for any friends he hangs out with third graders and fourth graders.

He has been seen with 4th Grade Male Rat (Number 2). He is generally nice to the kids and is in the same fourth grade class as Prunella, although it's unknown if he is friends with her. He was in the same kindergarten class as Prunella and most, if not all, of the other unnamed fourth graders that were in the kindergarten class.

Appearance
4th Grade Male Rat is a rat with a light gray complexion. He wears a yellow shirt with blue stripes, blue jeans, and green and white sneakers. He originally wore a yellow shirt with a single red stripe in the middle, long brown jeans, and red and white sneakers. His skin color was slightly dark brown. In the episode Buster's Special Delivery he is seen wearing a blue shirt with yellow stripes, and black jeans, and most likely the same green and white colored sneakers. He also has a brown Mohawk.

Trivia

 * This character has had a serious case of identity crises as his skin complexion has changed numerous times throughout the series along with the color of his clothes.
 * This character is in the same fourth grade class as Prunella.