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.

3rd Grade Male Rabbit

 * They were seen walking together in in the hallway in Cents-less.

'Arthur'

 * Season 1
 * Arthur's Eyes 10101
 * Arthur and the Real Mr. Ratburn 10201
 * Arthur Accused! 10602
 * Francine Frensky, Superstar 11002
 * Arthur Writes a Story 11201
 * Arthur's Lost Dog 11202
 * Arthur and the Crunch Cereal Contest 11601
 * Arthur, World's Greatest Gleeper 11702
 * Sue Ellen Moves In 12101
 * Team Trouble 12202
 * Bully for Binky 12301
 * The Scare-Your-Pants-Off Club 12802
 * Season 2
 * Arthur's Lucky Pencil 20202
 * Arthur's TV-Free Week 20701
 * The Short, Quick Summer (Miscolored) 20902
 * Buster Hits the Books 21102
 * Arthur and the Square Dance 21202
 * Sue Ellen's Lost Diary 21401
 * Season 3
 * Sue Ellen and the Brainasaurous 30302
 * Background Blues 30401
 * And Now Let's Talk to Some Kids 30402
 * Revenge of the Chip 30502
 * Binky Rules 30601
 * Arthur Rides the Bandwagon 30701
 * Dad's Dessert Dilemma 30702
 * Buster's Growing Grudge 30802
 * The Return of the King 30902
 * Arthur's Almost Live Not Real Music Festival 31102
 * Arthur's Dummy Disaster 31301
 * Arthur and D.W. Clean Up 31501
 * The Long, Dull Winter 31502
 * Season 4
 * The Fright Stuff 40302
 * Prove It 40402
 * Buster's Best Behavior 40902
 * Season 5
 * Double Dare 50102
 * It's a No-Brainer 50301
 * The World Record 50401
 * The Lousy Week 50501
 * The Election 50601
 * Sleep No More 50701
 * Season 6
 * Best of the Nest 60102
 * Prunella's Special Edition 60301
 * The Boy Who Cried Comet 60501
 * D.W.'s Backpack Mishap 60602
 * The Good Sport 60901
 * Season 7
 * Muffy Goes Metropolitan 70202
 * Elwood City Turns 100! 70500
 * Jenna's Bedtime Blues 70602
 * April 9th 71000
 * Season 9
 * The Law of the Jungle Gym 90302
 * A is for Angry 90702
 * Buster the Myth Maker 90902
 * Binky Goes Nuts 91001
 * Season 10
 * Happy Anniversary 100100
 * Desert Island Dish 100301
 * Do You Speak George? 100901
 * What's Cooking? 101001
 * Season 11
 * Germophobia 110102
 * Phony Fern 110401
 * Buster Gets Real 110802
 * Season 12
 * The Cherry Tree 120601
 * Season 13
 * The Silent Treatment 130201
 * Kung Fool 130202
 * When Carl Met George 130601
 * Season 14
 * The Buster Report 140102
 * The Agent of Change 140201
 * Falafelosophy 140401
 * Tales of Grotesquely Grim Bunny 140501
 * Season 15
 * Fifteen 150100
 * Buster's Secret Admirer 150301
 * Cents-less 150401
 * To Eat or Not to Eat 150501
 * S.W.E.A.T. 150502
 * Season 20
 * The Hallway Minotaur 200701
 * Season 22
 * When Rivals Came to Roost 220201