Paul Jacobs

' 3rd Grade Male Cat' is an unnamed third grader in Mrs. Fink's class. He spoke in The Lousy Week where he commented on Muffy's green hat that Sue Ellen was wearing.

He appears to be a nice kid and gets along with the other kids too. He has even hung out with the main characters in some episodes. In most of his appearances, he comes across as having a happy disposition.

Physical appearance
3rd Grade Male Cat is a gray cat. He wears long blue jeans, a blue-green sweater, a yellow shirt underneath his sweater, and brown shoes.

He wears a yellow backpack. He also has some hair growing on his head and he also has fur. In the episode D.W.'s Backpack Mishap, he wears blue swimming trunks. In the fall he wears a cream colored sweater.

Personality
His personality is not known, since he is a background character, but he appears to be nice to other kids. He is a fan of both the Scare-Your-Pants-Off Club books and the Henry Skreever series, and his elephant puppet was part of the ventriloquism craze George started.

3rd Grade Male Dog

 * The two have been seen getting ice cream together at the Ice Cream Shop.

Muffy

 * He attended her spring party.

Buster

 * They are seen walking out side by side in Sue Ellen and the Brainasaurus.

3rd Grade Female Aardvark (Number 2)

 * They have been seen playing football together.

'Arthur'

 * Season 1
 * The Scare-Your-Pants-Off Club 128b
 * Season 3
 * And Now Let's Talk to Some Kids 304b
 * Revenge of the Chip 305b
 * Arthur Rides the Bandwagon 307a
 * Dad's Dessert Dilemma 307b
 * Arthur's Almost Live Not Real Music Festival 311b
 * Season 4
 * Prove It 404b
 * Season 5
 * The Lousy Week 505a
 * Season 6
 * D.W.'s Backpack Mishap 606b
 * Season 7
 * Elwood City Turns 100! 705
 * Season 9
 * Buster the Myth Maker 909b
 * Season 11
 * Phony Fern 1104a
 * Season 12
 * The Cherry Tree
 * Season 14
 * The Agent of Change
 * Season 15
 * To Eat or Not to Eat