|Complexion||Brown (s1-s5, s16-present)|
|Residence||Mr. Ratburn's House, Elwood City|
|Family||Lisa Ratburn (mother)|
Otto Ratburn (father)
Rodentia Ratburn (sister)
Rodentia Ratburn's child (niece or nephew)
Patty Ratburn (sister)
Olga Ratburn (grandmother)
Hans Ratburn (grandfather)
Patrick Ratburn (husband)
|Book debut||Arthur and the True Francine|
|Cartoon debut||"Arthur's Eyes"|
|Voiced by||Arthur Holden (TV series)|
David Kessler (Living Books)
When Mr. Ratburn was a baby, he wore on a light blue sweater with a white collar, a red bow tie, white cloth diapers with pins, and bright red shoes and blue socks. At the age of one or two, he was already able to write multiplication problems.
As a kid, he had three outfits. Two of them were the Glenbrook Academy's uniforms. Then, he had casual clothes that he wore to events, like the Father's Day picnic. They consisted of a blue buttoned shirt with a white shirt under it and blue pants.
In the episode "Arthur Weighs In," it is revealed that as a child he used to be overweight (a "fatty rat" as he put it when talking with Arthur) until he began exercising more while learning to play ping-pong.
As a young adult, he attended Elwood City High School with Bailey, David Read, and Mr. Haney. In "Arthur's Almost Boring Day", it is revealed that he was a member of the Elwood City High School football team.
Future lifeMr. Ratburn announces that he will become a fourth grade teacher during the upcoming school year in "The Last Day". Besides this, not much is known about Mr. Ratburn's future outside of what is depicted in dream sequences. During the futuristic scene in the episode, "Buster Makes the Grade", it is suggested that Mr. Ratburn will continue his career as a teacher at Lakewood Elementary for many years to come. In Arthur's dream in "D.W. and the Beastly Birthday", Mr. Ratburn is seen four years in the future, with a beard and glasses. He wears a black suit and turtleneck sweater.
Mr. Ratburn's appearance consists of a green suit complete with a solid yellow shirt and bright red necktie (in the books, his uniform ranges to different colors). Being a rat, he has long whiskers, which he appears to keep trimmed.
He has brown clumps of hair in the books; although, in the cartoon show, his hair was restricted to thin black lines. He also wears his shirts tucked into his pants and always wears a belt buckle with his pants. He also wears blue pajamas and in one episode he wore a turquoise night shirt and another episode he also wore a tan colored sweater and black pants and brown or black slippers.
His casual clothing consists of a cream-colored T-shirt and faded blue jeans. For formal occasions, Mr. Ratburn wears a charcoal or black Tuxedo jacket with a white tuxedo shirt black bow tie and charcoal or black tuxedo trousers.
When outdoors for something like fossil-hunting, Mr. Ratburn wears a dark brown hat with a yellow line on the bottom of the tip of the hat going all around the tip. He also wears a very light yellow or beige shirt a dark blue scarf tucked into the shirt.
There is also a short-sleeved beige jacket with two pockets one on each side of the jacket and two shoulder straps one on each side of the jacket. He also wears blue shorts very light yellow or beige socks and light brown boots. He always carries a briefcase with him to class.
Mr. Ratburn is primarily known for being a strict teacher, but he has many other hobbies outside of the classroom, including puppetry, playing in a rock band, and bird-watching. He is also seen as a role model by several students. For instance, he encourages Arthur to be more physically active in "Arthur Weighs In," and he is able to relate to Maria's stuttering problem in "Maria Speaks."
He tends to give a lot of homework, projects and tests to the students in his class, which leads many to believe that he is the toughest teacher at Lakewood Elementary School. Despite the heavy amount of school work to do, many of his students come to find out he is not as bad as they initially thought after he explains about organization, self-discipline, and how they can do their homework in time for things they like to do. Arthur, Buster, and Brain consider Mr. Ratburn their friend, and Arthur goes to greet him when he sees him in public.
Even though Mr. Ratburn is calm and cool, he cackles uncontrollably in the dream sequences that the other characters have involving him.
Mr. Ratburn is often friendly, helpful and good-natured, rarely showing any hint of malice, and has shown that he truly cares about his students time and time again. In "The Last Day" and the song "Pop Quiz from Ratburn," Mr. Ratburn explains that his schoolwork is difficult because he wants to challenge his students and knows they can handle it. Mr. Ratburn takes his role as a teacher seriously and often tries to mentor his students, occasionally in non-academic fields. When the roof of his house collapses, Mr. Ratburn stays with the Read family, and is shown to enjoy watching Spooky Poo and other fun things, to Arthur's surprise.
He frequently struggles with new, modern technology, such as using computers, the Internet and his classroom's new interactive "smart" board; for example, the first time he used the Internet, he fell for multiple scams. This may be why he often uses an old film projector during his class lessons. He does become a bit more acclimated to some technology in various situations, however. He learns to use a tablet device called the BoysenBerry, and he manages to purchase a canoe online in "Best of the Nest."
In other media
In the Living Books computer games, he came out in Arthur's Teacher Trouble, even though there's a shadow look-alike of him walking outside while Arthur and Jane are out shopping for party supplies in Arthur's Birthday. He was voiced by David Kessler before the cartoon show replaced him with Arthur Holden.
In the later computer games (such as Arthur's Thinking Games), Mr. Ratburn's appearance is the same as in the show.
- Paige Turner - They have danced together.
- Mr. Marco - They have watched Dark Bunny together.
- Mr. Haney - They went to college together.
- David Read - They went to college together, he loves David's cooking, and was invited to stay with the Reads when his roof caved in.
- Bailey - They went to college and also high school together.
- Rodentia Ratburn - His sister
- Patty Ratburn - His sister
- Patrick Ratburn — His husband
Mr. Ratburn has numerous jobs. In "Arthur and the Real Mr. Ratburn", it's revealed that Mr. Ratburn's a teacher, a basketball coach, and works on the school newspaper. In his spare time, he administers puppet shows that are popular among young kids. In "The Short, Quick Summer," Mr. Ratburn got a summer job at Jack's Joke Shop, where he worked as a cashier and helped Sue Ellen learn a card game magic trick.
- The car that Mr. Ratburn drives is a red roadster convertible.
- In "Cents-less”, Mr. Ratburn is shown feeding two goldfish, whom he calls Vladimir and Estragon. It would seem that Mr. Ratburn has named his pets in honor of two characters from Samuel Beckett's Waiting for Godot.
- For the first few seasons, he has brown skin then changed to orange in the next few seasons and back to brown in Season 16.
- He may or may not be part Native American (specifically Cheyenne).
- He is named after Marc Brown's 7th grade math teacher, Mr. Gary Rathbun.
- Season 1
- Arthur's Eyes (Cameo) 10101
- Francine's Bad Hair Day 10102
- Arthur and the Real Mr. Ratburn 10201
- Arthur's Spelling Trubble 10202
- Buster's Dino Dilemma 10302
- Arthur's Lost Library Book 10402
- Locked in the Library! 10601
- Arthur Accused! 10602
- Buster Makes the Grade 10702
- Francine Frensky, Superstar 11002
- Arthur's Baby 11101
- Arthur Writes a Story 11201
- Buster's New Friend 11302
- Meek for a Week 11701
- Arthur's Almost Boring Day 12001
- The Half-Baked Sale 12002
- Sue Ellen Moves In 12101
- Team Trouble 12202
- Misfortune Teller 12302
- Arthur's Tooth 12401
- My Dad, the Garbage Man 12601
- Arthur's Substitute Teacher Trouble 12702
- I'm a Poet 12801
- My Club Rules 12901
- Stolen Bike 12902
- Season 2
- Arthur Meets Mister Rogers (Cameo) 20101
- Draw! 20102
- Arthur's Lucky Pencil 20202
- Arthur's Underwear 20501
- Arthur's TV-Free Week 20701
- Night Fright 20702
- The Big Blow-Up 20802
- The Short, Quick Summer 20902
- Arthur's Mystery Envelope 21002
- Buster Hits the Books 21102
- Fern's Slumber Party (Cameo) 21502
- Love Notes for Muffy 21601
- D.W. Blows the Whistle 21602
- Arthur the Loser 21702
- Arthur vs. the Very Mean Crossing Guard 21801
- How the Cookie Crumbles (Mentioned) 22001
- Season 3
- I'd Rather Read It Myself (Mentioned) 30202
- Arthur Goes Crosswire 30301
- Sue Ellen and the Brainasaurous 30302
- Background Blues 30401
- And Now Let's Talk to Some Kids 30402
- The Chips are Down 30501
- Binky Rules (Cameo) 30601
- Meet Binky (Cameo) 30602
- Arthur Rides the Bandwagon 30701
- Dad's Dessert Dilemma 30702
- Popular Girls 30801
- Buster's Growing Grudge 30802
- Arthur's Treasure Hunt (Cameo) 30901
- The Return of the King 30902
- Attack of the Turbo Tibbles (Mentioned) 31001
- Arthur's Almost Live Not Real Music Festival 31102
- Clarissa is Cracked 31202
- Mom and Dad Have a Great Big Fight 31401
- Arthur and D.W. Clean Up 31501
- The Long, Dull Winter 31502
- Season 4
- D.W.'s Library Card 40101
- Arthur's Big Hit 40102
- Muffy's New Best Friend 40202 (Cameo)
- The Blizzard 40501
- The Rat Who Came to Dinner 40502
- Prunella Gets it Twice 40602
- Binky Barnes, Wingman 40701
- To Beat or Not to Beat 40702
- 1001 Dads 40801
- Prunella's Prediction (Mentioned) 40802
- What is that Thing? 40901
- That's a Baby Show! 41002
- Season 5
- Double Dare 50102
- Kids are from Earth, Parents are from Pluto 50201
- Nerves of Steal ((Fantasy) 50202
- It's a No-Brainer 50301
- The Shore Thing 50302
- The World Record 50401
- The Cave 50402
- The Lousy Week (Cameo) 50501
- You Are Arthur 50502
- The Election 50601
- Sleep No More 50701
- Bitzi's Beau 50802
- Just Desserts (Fantasy) 50901
- Season 6
- Season 7
- Season 8
- Season 9
- Season 10
- Season 11
- Season 12
- Is That Kosher? (Cameo) 120101
- Never, Never, Never (Cameo) 120102
- The Frensky Family Fiasco 120202
- D.W.'s Stray Netkitten 120301
- For the Birds 120401
- Ungifted 120402
- The Chronicles of Buster 120501
- On This Spot 120502
- The Cherry Tree 120601
- War of the Worms 120701
- Do You Believe in Magic? 120902
- The Perfect Game 121001
- Season 13
- Season 14
- Season 15
- Fifteen 150100
- I Wanna Hold Your Hand 150201
- Cents-less 150401
- Buster the Lounge Lizard 150402
- S.W.E.A.T. 150502
- Prunella the Packrat 150701
- What's in a Name? 150702
- Muffy's Classy Classics Club (Cameo) 150801
- Through the Looking Glasses 150902
- The Butler Did... What? 151001
- The Trouble with Trophies 151002
- Season 16
- Season 17
- Season 18
- Season 19
- Season 20
- Season 21
- Season 22