- Michael Knight: Star of the TV Show Knightboat, "The crime solving boat!"
- Gerald: Monobrowed arch-nemesis of Maggie
- Ralph Wiggum: Paste-eating second-grader at Springfield Elementary
- Burns' goon: One of Mr. Burns' goons, seen in Homer's Odyssey
- Springfield Gorge ranger: Park ranger at the gorge, briefly seen in Bart the Daredevil
- Antoine Tex O'Hara: Manager of The Isotopes baseball team in Dancing Homer
- McBain girl: McBain's bit-on-the-side in 'You Have the Right to Remain Dead'
- Stampy: Elephant that was Bart's pet for a brief time
- John Swartzwelder: Writer for Itchy & Scratchy and lifelong friend of Krusty the Clown
- Deli guy: Delivered the 25ft sub that Bart ordered in My Sister, My Sister
- Luann Van Houten: Milhouse's mom who was born in Shelbyville
- Frank Grimes: Temporary employee at the nuclear plant; tragically killed by his dislike of Homer Simpson
- Evelyn: Marge's old high school acquaintance whom she meets in Scenes From the Class Struggle in Springfield
- Cosine: One of the 'Superfriends' from Bart's Comet
- Judge Roy Snyder: Presides over cases at Springfield Courthouse; hates Lionel Hutz, who repeatedly ran over his son
- Robert Palmer Twin: Parody of the women from Palmer's 'Addicted to Love' music video; seen in Homer's Night Out, inexplicably on a double date with Mr. Burns and Smithers
- Robert Palmer Twin: Parody of the women from Palmer's 'Addicted to Love' music video; seen in Homer's Night Out, inexplicably on a double date with Mr. Burns and Smithers
- Trainee Cop: Forget about the badge! When do we get the freakin' guns?!
- Professor Werner von Brawn: Wrestler from Bart the Daredevil
- Belle: Entrepreneuse and proprietoress of 'La Maison Derriere'
- Mr. Jericho: Leader of the counterfeir jeans ring uncovered in The Springfield Connection
- Luigi: Italian chef, proprietor of Luigi's restaurant
- E-mail: One of the 'Superfriends' from Bart's Comet
- Ham: One of the 'Superfriends' from Bart's Comet; Enjoys ham radio
- Helen Lovejoy: Gossipy wife of the Reverend
- Mayor Diamond Joe Quimby: The tax-cheating, wife-swapping, pot-smoking, spendocrat mayor of Springfield
- Princess Cashmere: Exotic dancer who was photographed dancing with Homer; Has also dated Apu
- John: Gay owner of Cockamamie's Collectibles Shop; befriended the Simpson family in Homer's Phobia
- Malloy: Cat burglar from Homer the Vigilante
- Sherri: One of Bart's classmates and twin of Terri
- Ned Flanders: The Simpsons' evangelical neighbour
- Bernice Hibbert: Dr. Hibbert's wife
- Corporal Punishment: One of Krusty's sideshows
- McGarnagle: The policeman who solves crimes in his spare time
- Kermit the Frog: Not quite a mop, not quite a puppet (appeared in Bart the Fink)
- Second Cousin Stanley Simpson: Shoots birds at the airport
- Dr. Nick Riviera: Not-entirely-competent doctor
- Simpson relative: Regional sales coordinator for the third largest distributor of bunk AND trundle beds
- Buddy 'Fallout Boy' Hodges: Played Radioactive Man's sidekick in the original TV series
- Simpson relative: His legs hurt
- Lurleen Lumpkin: Country singer that Homer managed in Colonel Homer
- Great Uncle Chet: Runs an unsuccessful shrimp company
- Wendell: School kid who's always ill
- Simpson relative: Environmental Lawyer
- Rod Flanders: The older Flanders child
- Lou the cop: Partner of Eddie
- Kearney: One of the bullies at school
- Dr. Simpson: Chief of complicated surgery at the Invasive Care Clinic
- Moldy: The 'elder' in The Happy Little Elves, a show Lisa used to love
- Actress: Hired by Mr. Burns to portray Marge
- Estonian Actor: Hired by Mr. Burns to portray Lisa
- Moroccan market stall owner: Sold Homer the Monkey's Paw
- British Actor: Michael Caine-esque actor hired by Mr. Burns to portray Homer
- Maude Flanders: Wife of Ned; died in Season 11
- Roy: Brief guest in the Simpson home
- Hollis Hurlbut: President of the Springfield Historial Society
- Nelson Muntz: Local bully
- Chester Lampwick: Original creator of Itchy
- Frank Ormand: Pretzel vendor who sold a franchise to Marge
- Jebediah Obediah Zachariah Jedediah Springfield: Springfield founder and cultural icon
- Inanimate Carbon Rod: Worker of the Week
- Very Tall Man: Drives a very small car
- Amber Dempsey: Winner of the Little Miss Springfield competition
- Colonel Leslie Hap Hapablap: Will tear you up like a Kleenex at a snot party; appears twice on this poster
- Aristotle Amadopolis: Owner of Shelbyville Nuclear Power Plant (the other SNPP)
- Jaques: Marge's bowling teacher; Surname is not Strap
- Australian Judge: Decided Bart needed 'a little kick in the bum'
- Tobias Drundridge: Australian boy who accepted Bart's collect call
- Bea Simmons: Grampa's girlfriend until she died of a burst ventricle
- Kang: Sister of Kodos, aliens from the Treehouse of Horror episodes
- Ballet teacher: Taught Bart to dance in Homer vs. Patty and Selma
- Groundskeeper Willie: Keeper of the grounds, at Springfield Elementary
- Mrs. Glick: Simpsons' neighbour on the other side to the Flandereses. Sold the house to run out the clock in Florida
- Fallout Boy: Jiminy Jillikers! It's Radioactive Man's sidekick!
- Bubbles: One of the Happy Little Elves, Lisa's favorite show in the early years
- Leon Kompowski: Thought he was Michael Jackson
- Bear: Briefly adopted Maggie in Call of the Simpsons
- Mathemagician: Entertainer at Martin's birthday party; Can conjure up magic sevens
- House of Evil proprietor: Sells forbidden objects from places men fear to tread...also froghurt
- Ugolin: Evil French guy from The Crepes of Wrath
- Cesar: Evil French guy from The Crepes of Wrath
- Grandma Van Houten: Lives in New York-esque suburb somewhere
- Eddie the cop: Partner of Lou; Normally yellow, but he obviously just got back from a holiday in the Caribbean
- Flying Hellfish: Logo for Grampa Simpson's unit in the Second World War II
- Dizzy: One of the Seven Duffs
- Captain Horatio McCallister: Yarr, he's not attractive
- Quimby bodyguard: One of Mayor Quimby's burly protectors
- Tattoo removal guy: Lasered off Bart's tattoo in Simpsons Roasting On An Open Fire
- German Scientist: Studied Homer, the 'brilliant beast', in Call of the Simpsons
- Ice Cream lady: Proprietor of Phineas Q. Butterfat's; Manages to keep a trim figure
- Millicent: Stable owner from whom Homer bought a pony for Lisa in the episode Lisa's Pony
- Rasputin the friendly Russian: Wrestler from Bart the Daredevil
- Sideshow Raheem: One of Krusty's many sidekicks over the years, as seen in I Love Lisa
- Captain Horatio McCallister: Yarr, he's not attractive
- Beer-N-Brawl Manager: Introduces Lurleen at the out-of-town redneck bar
- Shoshana: Snake's girlfriend in a few episodes
- Nick Callahan: Estate agent at Red Blazer Realty
- Happy Sumo greeter: Employee at the Japanese restaurant in One Fish, Two Fish, Blue Fish, Blowfish; Though she had pink hair in said episode
- Snowball II: A weird fat version of the Simpsons' cat
- Flaming Moe's waitress: Worked at Moe's for a short time before leaving to pursue a movie career
- The Chief: Patient at New Bedlam mental asylum in Stark Raving Dad; He's a lot paler here
- Hannibal Lecter: Seen in New Bedlam mental asylum in Stark Raving Dad
- Jeff Albertson: More commonly known as 'Comic Book Guy', he is the proprietor of Android's Dungeon, the comic book store
- Brandine Spuckler: Wife (and possibly sister) of Cletus, the slack-jawed yokel
- Mr. Teeny: Krusty's rollerskating monkey
- Moe Szyslak: Local bartender and proprietor of Moe's Tavern; subject to repeated prank calls
- Principal Seymour Skinner: Principal at Springfield Elementary school
- Melvin Van Horne: More commonly known as Sideshow Mel, he replaced Sideshow Bob on the 'Krusty the Clown Show'
- Hank Scorpio: Evil supervillain and President of Globex Corporation
- Arnie Pye: Channel 6 News' traffic reporter
- Salesman rom Ex-Con Security: Tried to convince Homer to seal off the doors and windows with bulletproof lucite
- Shelby: Bart's doppelganger rival from Shelbyville
- Lunchlady Doris: Dinner lady at Springfield Elementary school cafeteria
- Agnes Skinner: Principal Skinner's mother
- Band member: Drummer from 'The Larry Davis Experience' and 'Krusty and the Krums'
- Band member: Keyboardist from 'The Larry Davis Experience' and 'Krusty and the Krums'
- Band member: Tubist from 'The Larry Davis Experience' and 'Krusty and the Krums'; Oddly, he was yellow in the former
- Captain Kook: One of the characters in The Happy Little Elves
- Stonecutter Alien: Kept under wraps by the Stonecutters
- Pahusacheta Nahaspeemapetilon: Niece of Apu and daughter of Sanjay
- Homer Simpson: Some guy
- Clancy Wiggum: Chief of Springfield Police
- Miss Elizabeth Hoover: Second grade teacher at Springfield Elementary
- Robert Underdunk Terwilliger: Known as 'Sideshow Bob' to friends and enemies alike; Krusty's former sideshow who framed Krusty for armed robbery and tried to kill Bart on numerous occasions
- Jamshed Nahasapeemapetilon: Head of security at the Kwik-E-Mart
- Cowboy Bob: Proprietor of Bob's RV Round-Up
- Barney Gumble: Homer's best friend and stalwart of Moe's Tavern
- I'm just hair!: Your head ended 18 inches ago
- Marge Simpson: Housewife and mother of the Simpson household
- Patty Bouvier: Marge's sister and twin of Selma; She is openly gay
- Pet Store clerk: Worker at Springfield Pet Shop who believes he can communicate with dogs through a canine-human mind-meld
- Rex Banner: Cop who replaced Chief Wiggum during Springfield's Prohibition period
- Gary: One of the three physics nerds at Springfield University
- Cecil Terwilliger: Brother of Sideshow Bob who tried to blow up Springfield Dam
- Recycling Hippie: Employee at Springfield Recycling Plant
- Evan Conover: Undersecretary for International Protocol, Brat and Punk Division; from Bart vs. Australia
- Handsome Pete: Dances for nickels down at Springfield Docks
- Tipsy: One of the Seven Duffs
- Jessica Lovejoy: Disobedient daughter of the Reverend, who was Bart's love interest briefly
- The Leader: Chief of the Movementarians, who promised to whisk everyone off to the planet Blisstonia
- Dr. Marvin Monroe: Psychologist with a gravely voice
- Clown Doctor: One of Krusty's many sideshows; appeared in Like Father, Like Clown
- Ethan Foley: Student at The Enriched Learning Center for Gifted Children; Often speaks in palindromes
- Park Ranger McFadden: Employee at Mount Useful from Mountain of Madness
- Pepi: Homer's temporarily-adopted 'Little Brother'
- Legs: Member of the 'Legitimate Businessmen's Social Club'; he's the one with the raspy, low-pitched voice
- Coyote: Homer's spirit guide after he ate Guatemalan insanity peppers
- Happy Sumo Master Chef: His skilled hands are always busy
- Simpson relative: Jug band manager
- Simpson relative: Begs celebrities for money
- Simpson relative: Steps in front of cars and sues the drivers
- Simpson relative: Plays a millionaire at parties... or at least, he'd like to...
- Selma Bouvier: Marge's sister and twin of Patty. She's the one who's been married several times and has a baby, Ling
- Cooder: Carny who squatted in the Simpson home
- Mona Simpson: Homer's mother, on the run from the law
- Mr. Bergstrom: Substitute teacher and hero of Lisa
- Gerald: Monobrowed arch-nemesis of Maggie
- Scott Christian: Newsreader at Channel 6. Used in lieu of Kent Brockman when he's off or doing live reporting
- Stampy: Elephant that was Bart's pet for a brief time
- French Policeman: Basically, the one nice French person; Appeared in The Crepes of Wrath
- Sam: Barfly at Moe's Tavern. Spoke in Lisa the Greek
- Female judge: Sometimes used instead of Judge Snyder. It's nice to see some chicks on the bench!
- Principal Dondelinger: Headteacher at Springfield High School
- Bullfighter: No way a bull's gonna miss a target that big, man!; Appeared in Bart the Genius
- Lisa: Replacement for the real Lisa Simpson in The Simpsons Spin-Off Showcase
- Veterinarian: Flunked out of dental school
- Number One: Head of The Stonecutters (now named 'No Homers')
- Snowball II: The Simpsons' second cat; Somewhat ironically named since its black, not white like Snowball I
- Commandant at Rommelwood Military Academy: Appeared in The Secret War of Lisa Simpson
- Poochie: Short-lived Itchy and Scratchy character; Died on the way back to his home planet
- Crazy Old Man: Old grey mare she ain't what she used to be...
- Karl: Homer's temporary assistant when he had hair
- Bruno Drundridge: Australian guy billed nine hundred dollary-doos for Bart's collect call
- Gil Gunderson: Terrible at everything, and thus changes jobs regularly
- Jimmy the Scumbag: Frankly, I would have expected better from him
- Emily Winthrop: Dog trainer from Bart's Dog Gets An F
- Mary Bailey: Governor of Springfield
- Space Mutant: The star of the 'Space Mutants' franchise from the shorts and early series
- Sanjay Nahasapeemapetilon: Apu's brother and Kwik-E-Mart clerk
- Sarah Wiggum: Wife of Chief Clancy, mother of Ralph
- Remorseful: One of the Seven Duffs
- Edgy: One of the Seven Duffs
- Louie: Member of the 'Legitimate Businessmen's Social Club'; he's the one with the high-pitched voice
- Adil Hoxha: Albanian exchange-student-come-spy
- Radioactive Man: Comic Book hero
- Waylon Smithers: Sycophantic assistant to Mr. Burns
- Jebediah Obediah Zachariah Jedediah Springfield: Springfield founder and cultural icon
- Apu Nahasapeemapetilon: Proprietor of the Kwik-E-Mart convenience store; has been shot eight times this year and as a consequence, almost missed work
- Fritz: German businessman that bought the nuclear plant in Burns Verkaufen der Kraftwerk
- Mobster: Member of the 'Legitimate Businessmen's Social Club'
- Bob Arnold: Congressman for whatever state Springfield is in
- Marty: One half of 'Bill and Marty', DJs on KBBL radio
- Pedro the Bumblebee Man: Originally on Channel Ocho but was poached by Krusty for his show
- Brittany Brockman: Kent Brockman's daughter; was right about the Berlin Wall
- Mother of Sherri/Terri: Seen in Bart Sells His Soul
- Otto Mann: School bus driver and pothead
- Surly Joe: The only foundation repair guy in town
- Ruth Power: The Simpsons' next door neighbour (on the other side to the Flandereses) ever since the Winfields moved away to Florida
- Database: Regular nerd and member of the 'Superfriends' from Bart's Comet
- Blue-Haired Lawyer: Unnamed attorney with a nasally voice; often seen at the head of Burns' team of lawyers
- The Devil: Appeared when Bart visits Hell in Bart Gets Hit By a Car
- Lewis: One of Bart's schoolfriends
- Frank Grimes: Temporary employee at the nuclear plant; tragically killed by his dislike of Homer Simpson
- Luann Van Houten: Milhouse's mom who was born in Shelbyville
- Dr. Foster: Child psychologist who mentored Ned Flanders as a child, and again when he went crazy after a hurricane tore down his house
- Dolph: The quieter of the school bullies
- Jimbo Jones: School bully whose real name is 'Corky'
- Roger Meyers, Jr.: CEO of Itchy & Scratchy Studios, founded by his father
- Bleeding Gums Murphy: Jazz musician and idol to Lisa Simpson
- Martin Prince: Fourth grade class brain at Springfield Elementary with an IQ of 216
- McBain: Clichéd action hero
- Hans Moleman: 31-year-old recovering alcoholic; gets injured a lot
- Üter: Foreign exchange student; don't make him run, he's full of chocolate!
- Professor Lombardo: Art teacher at Springfield Community College from Brush With Greatness
- Todd Flanders: The younger Flanders child; has a pet woodpecker
- Llewellyn Sinclair: Director of 'Oh Streetcar!' in A Streetcar Named Marge
- Mr. Largo: Music teacher as Springfield Elementary
- Mr. Prince: Martin Prince's father
- Education Center employee: Interviews Homer at the Adult Education Center
- Leopold: Alright you little punks, pick up your freakin' ears 'cause I'm only gonna say this once... this is Superintendent Chalmers' assistant!
- Janey: One of Lisa's (few) schoolfriends
- Birch Barlow: Ultra-Conservative and author of the bestselling book 'Only Turkeys Have Left Wings'
- Erin: Lisa's holiday friend from Little Pwagmattasquarmesettport (Summer of 4 Ft. 2)
- Tattoo Annie: Currently incarcerated at Springfield Women's Prison
- Terri: One of Bart's classmates and twin of Sherri
- Dooley: One of Bart's classmates, seen in Home Sweet Homediddly-Dum-Doodily
- Anthony 'Fat Tony' D'Amico: Chairman of the Legitimate Businessmen's Social Club
- Troy McClure: Actor and television presenter - you may remember him from such productions as 'Gladys The Groovy Mule' and 'Lead Paint, Delicious But Deadly'
- Reverend Lovejoy: Minister at the First Church of Springfield
- Bearded Lady: One of Krusty the Clown's many sideshows
- Shary Bobbins: British nanny that briefly took care of the Simpson kids; unfortunately died on her departure
- Ned Flanders: The Simpsons' evangelical neighbour
- Ralph Wiggum: Paste-eating second-grader at Springfield Elementary
- Matt Groening: Right-wing nutjob
- Larry: One of the barflies at Moe's Tavern
- Kodos: Sister of Kang, aliens from the Treehouse of Horror episodes
- Akira: Japanese waiter and chef
- Don Vittorio DiMaggio: Elderly mafia member from Homie the Clown
- Jimmy: Child actor appearing alongside Troy McClure in many informational films
- Sir Oinks-A-Lot: Beloved mascot of Springfield A&M; one of Richard Nixon's best friends
- Human Fly: Come on! I stayed up all night dying my underwear!
- Blinky: Three-eyed fish, mutated by toxic waste from Springfield Nuclear Power Plant; and with a taste that can't be beat!
- Bobo: Mr. Burns' cherished teddy bear
- Samantha Stanky: Briefly a student at Springfield Elementary where she fell in love with Milhouse
- Laddie: Intelligent and well-behaved dog the Simpsons owned for a while; now a police dog
- Stewart: Lazy duck who works at the power plant
- Manjula Nahasapeemapetilon: Apu's wife through an arranged marriage
- Freddy Quimby: It's pronounced Chow-dah!
- Smooth Jimmy Apollo: Football pundit from Lisa the Greek; declares teams his 'Lock of the Week'
- Nigel: Be Sharps manager; Stars discovered, fortunes made, hats blocked
- Dr. Zweig: Marge's psychologist in Fear of Flying
- Dr. Colossus: Was in jail in Who Shot Mr. Burns? (Part One)
- Mrs. Prince: Martin's mother
- Smilin' Joe Fission: Mascot of Springfield Nuclear Power Plant
- Hugh Parkfield: Lisa's future fiancé
- Simpson relative: Architect
- Simpson relative: Prison snitch
- Bob Arnold: Congressman for whatever state Springfield is in
- Snake: He's totally a jailbird, dude
- Artie Ziff: Dated Marge in high school but was scuppered by his 'busy hands'
- Mr. Teeny: Krusty's rollerskating monkey
- Colonel Leslie Hap Hapablap: Will tear you up like a Kleenex at a snot party; appears twice on this poster
- Tattoo Guy: Tattooist at 'The Happy Sailor Tattoo Parlor'
- The Devil: Appeared when Bart visits Hell in Bart Gets Hit By a Car
- Pedro the Bumblebee Man: Originally on Channel Ocho but was poached by Krusty for his show
- Samantha Stanky: Briefly a student at Springfield Elementary where she fell in love with Milhouse
- Squeaky-Voiced Teen: Awkward teenager often seen at Krusty Burger
- Robot Burns: Still not dead in 1,000,000 A.D.
- Robot Smithers: Still a lapdog in 1,000,000 A.D.
- Dave Shutton: Writer/reporter for the Springfield Shopper
- Surly: One of the Seven Duffs; only looks out for one guy - Surly
- Lisa Simpson: Overlooked middle child
- Bart Simpson: Underachiever and proud of it
- Dr. Julius Hibbert: Family physician; the only competent doctor in town
- Edna Krabappel: Bart's fourth-grade teacher at Springfield Elementary
- Abraham 'Grampa' Simpson: Homer's father, sporting Napoleon's hat that he wore for a week in April 1796
- Kent Brockman: Local news anchor and recipient of four Golden Quaff awards
- Jasper Beardley: Friend and fellow retiree of Grampa Simpson; often gets his beard caught in pencil sharpeners
- Mrs. Bouvier: Marge's mother
- Santa's Little Helper: The Simpson family dog
- Maggie Simpson: One-year-old baby genius
- Superintendent Chalmers: Administrator for Springfield's schools and boss of Principal Skinner
- Herbert Powell: Homer's half-brother, ruined by the car he asked Homer to design
- Mindy Simmons: Temporary SNPP employee who Homer fell for
- Cletus Spuckler: Slack-jawed yokel
- Charles Montgomery Burns: Twisted, loveless billionaire; owner and CEO of Springfield Nuclear Power Plant
- Milhouse Van Houten: Bart's best friend; has a crush on Lisa
- Disco Stu: Doesn't advertise
- Mrs. Nahasapeemapetilon: Apu's mother who organised his arranged marriage
- Professor John Frink: Inventor and uber-nerd
- Lyle Lanley: Charismatic businessman who sold Springfield a dodgy monorail
- Carl Carlson: SNPP employee (was Homer's supervisor at one point) and regular barfly at Moe's; best friends with Lenny Leonard
- Lenny Leonard: SNPP employee and regular barfly at Moe's; best friends with Carl Carlson
- Gunter: Vegas-style entertainer and half of act 'The Flamboyant Magic of Gunter and Ernst'
- Ernst: Vegas-style entertainer and half of act 'The Flamboyant Magic of Gunter and Ernst'
- Johnny D: Prisoner at Springfield Penitentiary; his gates were sold at the police auction in Realty Bites
- Charlie: Employee at Springfield Nuclear Power Plant; gets injured quite often
- Capitol City Goofball: Mascot for the Capitol City baseball team
- Larry Burns: Witty and charismatic son of Mr. Burns
- Report Card: One of the 'Superfriends' from Bart's Comet
- Freak show manager: Manages the 'pageant of the transmundane' at Hullabalooza
- Scratchy: Half of everyone's favourite cat and mouse team, 'Itchy & Scratchy'
- Itchy: Half of everyone's favourite cat and mouse team, 'Itchy & Scratchy'
- Don Brodka: That's right, Don Brodka, uh-huh; he's the security guard at the Try N Save
- Kirk Van Houten: Milhouse's father; divorced from Luann and now sleeps in a racecar bed
- Moe Szyslak: Local bartender and proprietor of Moe's Tavern; subject to repeated prank calls
- Queasy: One of the Seven Duffs
- Benjamin: One of the three physics nerds at Springfield University
- Doug: One of the three physics nerds at Springfield University
- Shotgun Pete: Minister at a small chapel across the state line, who married Homer and Marge
- Lionel Hutz: Incompetent lawyer
- Allison Taylor: Extremely smart 7-year-old, skipped ahead to Lisa's second grade class
- Laura Powers: The girl next door that Bart had a crush on
- Captain Lance Murdoch: Daredevil stunt motorcyclist
- Brad Goodman: Self-help guru who told Springfieldianites to behave like Bart
- Herman: Proprietor of Herman's Military Antiques; lost his right arm sticking it out of a bus window
- Ms. Botz: Rogue babysitter caught by Bart & Lisa but unwittingly let free by Homer
- Rabbi Hyman Krustofski: Father of Krusty the Clown
- Ashley Grant: Grad student who accused Homer of sexual harassment in Homer Badman
- Robert Underdunk Terwilliger: Known as 'Sideshow Bob' to friends and enemies alike; Krusty's former sideshow who framed Krusty for armed robbery and tried to kill Bart on numerous occasions
- Mr. Muntz: Nelson's father
- Sleazy: One of the Seven Duffs
- Krusty the Clown: Children's entertainer; real name Herschel Shmoikel Krustofski
- Stacey Lovell: Original creator of the Malibu Stacey doll
- Sgt. Seymour Skinner: Revealed Principal Skinner to be an imposter
- Gabbo: Entertaining puppet who nearly killed Krusty's career
- Arthur Crandall: That's easy for you to say, you don't have a hand up your tuckus!
- Spud: Carny son of Cooder; they both squatted in the Simpson home
- Richard: One of Bart's schoolfriends
- Sunday School Teacher: Handles the kids at the First Church of Springfield
- Bill: One half of 'Bill and Marty', DJs on KBBL radio
- Smiley: One of the Happy Little Elves
- The Curious Bear Cub: A character from The Happy Little Elves
- Happy Little Elf: Another one of those green creatures
- Giggly the Elf: One of the Happy Little Elves; appeared in Some Enchanted Evening and Hello Gutter, Hello Fadder
- Dr. J. Loren Pryor: School psychiatrist at Springfield Elementary