Harley Simmons

3rd Grade Male Rabbit is an unnamed third grader who made his first appearance in the episode "Arthur's Eyes".

He spoke once, which happened at the end of the episode "Arthur's Substitute Teacher Trouble", when he remarked to one of his classmates that he felt bad for the kids in Mr. Ratburn's class.

He is seen in the background in many episodes and seems to get along well with the other kids at school.

Physical appearance
3rd Grade Male Rabbit is a rabbit with a cream complexion. He wears a faded purple sweater with a collar, long black jeans with a belt, and red and white sneakers. In one episode he was seen with a magenta colored backpack.

He has some hair on his head and wore light blue swim trunks. In the episode, Bugged this character was seen wearing glasses.

It's unknown if he still wears them, but this is probably unlikely since this was seen in Brain's imagination, although he was seen wearing them again in the episode Sue Ellen's Little Sister.

Appearances
season 20
 * Specials
 * It's Only Rock 'n' Roll
 * Season 1
 * Arthur's Eyes 10101
 * Arthur and the Real Mr. Ratburn 10201
 * Arthur Accused! 10602
 * Arthur Goes to Camp 10701
 * Arthur Writes a Story 11201
 * Arthur's Lost Dog 11202
 * So Long, Spanky 11301
 * Team Trouble 12202
 * Arthur's Substitute Teacher Trouble 12702
 * The Scare-Your-Pants-Off Club 12802
 * Season 2
 * Draw! 20102
 * Arthur's Lucky Pencil 20202
 * Arthur's TV-Free Week 20701
 * Arthur's Mystery Envelope 21002
 * Arthur and the Square Dance 21202
 * Arthur vs. the Very Mean Crossing Guard 21801
 * Season 3
 * Revenge of the Chip 30502
 * Binky Rules 30601
 * Meet Binky 30602
 * Arthur Rides the Bandwagon 30701
 * Arthur's Almost Live Not Real Music Festival 31102
 * What Scared Sue Ellen? 31201
 * Arthur's Dummy Disaster 31301
 * Arthur and D.W. Clean Up 31501
 * Season 4
 * Arthur's Big Hit 40102
 * Muffy's New Best Friend 40202
 * The Fright Stuff 40302
 * The Rat Who Came to Dinner 40502
 * Binky Barnes, Wingman 40701
 * That's a Baby Show! 41002
 * Season 5
 * Double Dare 50102
 * It's a No-Brainer 50301
 * The Lousy Week 50501
 * The Election 50601
 * Sleep No More 50701
 * Season 6
 * Sue Ellen Gets Her Goose Cooked 60101
 * Best of the Nest 60102
 * Prunella's Special Edition 60301
 * The Boy Who Cried Comet 60501
 * Season 7
 * Elwood City Turns 100! 70500
 * Jenna's Bedtime Blues 70602
 * Season 8
 * Bugged 80302
 * D.W., Dancing Queen 80402
 * Vomitrocious 80501
 * Sue Ellen Chickens Out 80502
 * Season 9
 * Francine's Big Top Trouble 90201
 * The Law of the Jungle Gym 90302
 * Arthur Makes Waves (Buster's imagination) 90601
 * A is for Angry 90702
 * Binky Goes Nuts 91001
 * Season 10
 * Desert Island Dish 100301
 * Do You Speak George? 100901
 * What's Cooking? 101001
 * Season 11
 * Buster Gets Real 110802
 * Season 12
 * The Cherry Tree 120601
 * War of the Worms 120701
 * Home Sweet Home 120901
 * Season 13
 * The Silent Treatment 130201
 * Kung Fool 130202
 * MacFrensky 130401
 * D.W. Swims with the Fishes 130602
 * Prunella and the Haunted Locker 130802
 * The Pride of Lakewood 130902
 * Season 14
 * The Buster Report 140102
 * The Agent of Change 140201
 * Falafelosophy 140401
 * Season 15
 * Cents-less 150401
 * To Eat or Not to Eat 150501
 * S.W.E.A.T. 150502
 * Season 16
 * Brain's Biggest Blunder 160702

Trivia

 * This character has been seen wearing glasses in some episodes. It's not known why he usually doesn't wear them or the history behind them.
 * He is in Miss Sweetwater's class.
 * He plays the tambourine in the Lakewood Elementary Band.
 * Without glasses, he looks a lot like Buster.