List of one-time characters from The Simpsons

This following is a list, by episode, of one-time fictional characters from the American animated television comedy series The Simpsons. For main and recurring characters, see List of characters from The Simpsons or List of recurring characters from The Simpsons.

Some of these 'one-time' characters have returned to the show, sometimes in just brief speaking appearances, or even just 'in the crowd' scenes. Other characters, originally intended to be 'one-time' characters have ended up becoming regular cast members, such as Cletus Spuckler, Luigi Risotto, Disco Stu, Groundskeeper Willie, Cookie Kwan & Lindsey Naegle.

For purposes of this list, "one-time" means they were central to an episode one time. Some of the characters listed here have appeared in later episodes, but only briefly. The characters are sorted by episode.

Series characters

Season 1

• "Bart the Genius"
  • Mrs. Mellon (Marcia Wallace) Teacher at a school for gifted children that Bart is sent to after cheating on an I.Q Test. She was the only other character Marcia Wallace voiced other than Edna Krabbapel. She often makes a lot of background appearances in current episodes.

• "The Call of the Simpsons"
  • Cowboy Bob (Albert Brooks) Owner of Bob's Roundup RVs. He has had non-speaking cameo's after this episode

• "Life on the Fast Lane"
  • Jacques "Brunswick" (Albert Brooks) is a bowling instructor who pursued an affair with Marge Simpson. Jacques has since made non-speaking cameos in subsequent episodes. He is also seen being startled by Bart on his skateboard (along with Bleeding Gums Murphy, Comic Book Guy, and Apu) in the opening credits of each episode.

• "Homer's Night Out"
  • Gulliver Dark, (Sam McMurray), a lounge singer and playboy.

• "The Crepes of Wrath"
  • César (Dan Castelaneta) and Ugolin (Harry Shearer) are two hostile French winemakers who force Bart to be their slave. They appear briefly in "Lisa the Greek" and have a cameo role in a ’’Simpsons’’ comic, which has them escaping prison and teaming up with Sideshow Bob to get revenge on Bart. Their names reference characters from the movie Jean de Florette.
  • Adil Hoxha (Tress MacNeille) An Albanian foreign exchange student who replaced Bart when he was deported to France . He was actually an Albanian spy who was deported back to Albania and replaced by an American Spy from Albania.

• "Some Enchanted Evening"
  • Ms. Botz/Lucille Botzcowski (Penny Marshall) is an escaped criminal, known as "The Babysitter Bandit", who tried to rob the Simpson family, but was thwarted and captured by Bart, Lisa and Maggie. She deceived Homer into freeing her moments before the police arrived. In "Bart's Dog Gets an F" a news broadcast mentions that she has escaped from prison. She appears in "Hurricane Neddy", pacing back and forth in a cell in Calmwood Mental Hospital.

Season 2

• "Simpson and Delilah"
  • Karl (Harvey Fierstein) was Homer's assistant who tried to help Homer succeed as an executive. When Homer was about to be fired for his misdeeds, Karl took the blame, being fired in his place. Karl makes cameos in "Bart Carny" on the glass-bottom boat ride and in "The Trouble with Trillions" waiting in line at the Springfield Post Office to pay taxes.

• "Treehouse of Horror"
  • Serak the Preparer (James Earl Jones) is a cohort of Kang and Kodos who made the Simpson family dinner while on their way to their home planet. Kang and Kodos have since appeared in every halloween episode, but Serak has since not reappeared.

• "One Fish, Two Fish, Blowfish, Blue Fish"
  • Toshiro the Apprentice Chef (Joey Miyashima) The Master Sushi Chef's apprentice
  • Master Sushi Chef (Sab Shimono) Sushi chef at a Japanese restaurant who messed up Homer's sushi when he was dating Ms. Krabbapel.
  • Hostess (Diane Tanaka) Hostess at the Japanese Restaurant.

• "Bart's Dog Gets an F"
  • Emily Winthrop, (Tracey Ullman) a British dog trainer. She was seen at Grandpa's apology in Old Money.

• Episode 7F17 - "Old Money"
  • Beatrice "Bea" Simmons (Audrey Meadows) was Grampa Simpson's girlfriend and they first met at the Springfield Retirement Castle. After arranging a date for Bea's birthday, Grampa was forced to stand her up when Homer took him to "Discount Lion Safari". When he returned to the Retirement Castle, Bea had died but had left all of her money to him.

• "Brush with Greatness"
  • Professor Lombardo, (Jon Lovitz) an art teacher at Springfield Community College. Re-appeared briefly in "The Ziff Who Came To Dinner."

• "Lisa's Substitute"
  • Mr. Bergstrom (Dustin Hoffman, credited as "Sam Etic") was Lisa's substitute teacher. Mr. Bergstrom took over for Ms. Hoover after she believed she had got Lyme Disease and Lisa immediately took to him because he was the kind of male role model she needed in her life. However, after Ms. Hoover returned, he had to leave Springfield. A distraught Lisa ran to stop him, and Mr. Bergstrom gave her a note saying "You are Lisa Simpson". The note appears one more time in the episode "Smart & Smarter"", in which Marge gives Lisa a paper that says "You are Lisa Simpson" and then Lisa says "I already have one of those".

Season 3

• "Stark Raving Dad"
  • Leon Kompowsky (Michael Jackson & Kipp Lennon) was a mental patient who thought he was Michael Jackson. The character was voiced by Michael Jackson (who, for contractual reasons, was credited as "John Jay Smith") but his singing was done by Jackson's sound-alike, Kipp Lennon. Kompowsky was set to later return, except this time as Prince, but the idea fell through when Prince turned the part down.

• "Mr. Lisa Goes to Washington"
  • Bob Arnold (Hank Azaria) was a corrupt congressman. He accepted a bribe to demolish Springfield National Forest, but was overheard by Lisa Simpson, and was later caught and arrested.

• "Homer Defined"
  • Aristotle Amadopolis (Jon Lovitz and Dan Castellaneta) is the wealthy owner of the Shelbyville Nuclear Power Plant. He was originally voiced by Jon Lovitz, but would have a brief speaking part voiced by Dan Castellaneta in "Homer at the Bat".

• "Flaming Moe's"
  • Colette (Jo Ann Harris), a waitress hired by Moe. Catherine O'Hara originally agreed to do the voice and recorded her part for the character. However, the producers felt that her voice did not fit the role and instead had Jo Ann Harris do the part.

• "Burns Verkaufen der Kraftwerk"
  • Horst (Phil Hartman), Hans, and Fritz were three German businessmen who bought the Springfield Nuclear Power Plant from Mr. Burns. However, they abandoned the venture and settled to sell the plant back to Mr. Burns for half of what they bought it when they found out how horrible the working and safety conditions were.

• "Bart's Friend Falls in Love"
  • Samantha Stanky (Kimmy Robertson) is a girl from Phoenix, Arizona who moves to Springfield and starts school at Springfield Elementary School. While there, she and Milhouse Van Houten meet and fall in love. But Bart, jealous of Samantha spending time with Milhouse, reveals their relationship to Samantha's dad, who sends her to an all-girls convent school.

Season 4

• "Kamp Krusty"
  • Mr. Black (Harry Shearer) was the evil camp director of Kamp Krusty. Mark Kirkland was sure that the character was going to reappear later in the series, but he never did.

• "A Streetcar Named Marge"
  • Llewellyn Sinclair (Jon Lovitz) is a short-tempered perfectionist who is a theatre director. Llewellyn has since made brief cameo appearances.
  • Ms. Sinclair (Jon Lovitz), head of the Ayn Rand School for Tots.

• "Lisa the Beauty Queen"
  • Amber Dempsey, (Jo Ann Harris) a professional beauty queen who won The Little Miss Springfield Beauty Pagent, but got struck by lightning making Lisa win.

• "New Kid on the Block"
  • Laura Powers, (Sara Gilbert) Bart's first girlfriend who moved next door to Bart when The Winfields moved out. Bart then developed a crush on her, but ended up in heartbreak when he found out she was in love with Jimbo Jones.

• "Marge vs. the Monorail"
  • Lyle Lanley (Phil Hartman) is a smooth talking con man who talks the people of Springfield into buying an expensive monorail after Mr. Burns was forced to give the town three million dollars (However, it's revealed at the town meeting to decide how to spend the money that one million dollars has mysteriously disappeared, most likely taken by Mayor "Diamond Joe" Quimby). He then suggested that Springfield should buy a monorail. However he decided to use the money to go on vacation and have the Springfieldians get badly injured. He however got injured when an angry mob of North Haverbrook residents attacked him.
  • Sebastian Cobb (Harry Shearer) A scientist who built North Haverbrook's monorail for Lyle Lanley. In Treehouse of Horror XV he is an addict at Mao's Opium Den.

• "Brother from the Same Planet"
  • Tom (Phil Hartman) is Bart's bigger brother. Bart decided to get him as a bigger brother when Homer failed to pick him up from Soccer practice. At the aquarium Homer got into a fight with him. At the end of the episode he became Pepi's big brother. The part was written for Tom Cruise, but Cruise declined so the role was given to Phil Hartman instead.
  • Pepi (Tress MacNeillie) Homer's little brother. At the end of the episode he became Tom's little brother. Was once a poor boy who lived in Springfield.

• "Last Exit to Springfield"
  • Dr. Wolfe (Hank Azaria) is the dentist that the Simpson family visits. Anthony Perkins had agreed to voice Dr. Wolfe, but unfortunately fell ill and could not record the part. Clint Eastwood and Anthony Hopkins had also been asked to provide a voice, but both declined.

• Krusty Gets Kancelled
  • Arthur Crandall (Harry Shearer) and Gabbo (Hank Azaria) are a puppet and ventreliquist who start their own TV show that is in competition with Krusty . They also made quick appearances in Bart to the Future , Homerazzi , and The Simpsons Movie.

Season 5

• "Homer's Barbershop Quartet"
  • Nigel (Harry Shearer) The Manager of the Be-Sharps. He suggested the band should replace Chief Wiggum with Barney Gumble , and suggested that they should have a name and be a public band.

• "Treehouse of Horror IV"
  • The Gremlin, (Frank Welker) is a gremlin who, in a parody of The Twilight Zone episode "Nightmare at 20,000 Feet", attacks a school bus going to Springfield Elementary School with Bart Simpson on it.

• "Bart's Inner Child"
  • Brad Goodman, (Albert Brooks) is a self-help guru. After talking to Bart Simpson during a lecture at Springfield, he encourages the town to be more like Bart and to "do what you feel like", which causes disastrous consequences. His is the fourth character to be voiced by Brooks in the show.

• "The Last Temptation of Homer"
  • Mindy Simmons (Michelle Pfeiffer) is a former employee of Springfield Nuclear Power Plant, for whom Homer had an attraction. According to "Another Simpsons Clip Show", she was fired from the Plant, however she has still been used as a background character at the plant in subsequent episodes, suggesting she may have been rehired. She was part of the "Home Wreckers" bowling team seen in Team Homer.

• "Homer the Vigilante"
  • Molloy the Cat Burglar, (Sam Neill) a thief and cat burglar who steals many objects from the townspeople of Springfield, including Lisa's saxophone. He is later caught by Grandpa, but escapes while the town searches for his buried treasure. He is based on General Zaroff in The Most Dangerous Game.

• "Lisa vs. Malibu Stacy"
  • Stacy Lovell, (Kathleen Turner) inventor of the Malibu Stacey. When Lisa felt Malibu Stacy's phrases were sexist Lisa decided to see her. Lovell then decided to have Lisa make her own doll called Lisa Lionheart.

• "Deep Space Homer"
  • Race Banyon, (Hank Azaria) an astronaut that aided Homer and Buzz Aldrin on their astronomy mission.

• "The Boy Who Knew Too Much"
  • Freddie Quimby, (Dan Castellaneta) the nephew of Mayor Quimby who is accused of assaulting a waiter. He reappears in "See Homer Run" (with a somewhat altered voice and appearance) as his uncle's press secretary.

Season 6

• "Lisa's Rival"
  • Allison Taylor, (Winona Ryder) a girl who outsmarts Lisa at everything. At first Lisa thinks that she might be good friends with her, but after she wins first chair in the school band Lisa starts to hate her. Lisa then decides to outsmart her in The Diorama-Rama by switching her diorama with a fake one, however both of them lose to Ralph Wiggum . She has re-appeared in backgrounds, and has occasionally spoken, but was voiced by Pamela Hayden after her first appearance.

• "Sideshow Bob Roberts"
  • Birch Barlow, (Harry Shearer) right-wing radio talk show host and political commentator in the style of Rush Limbaugh. He wrote a book called Only Turkies Have Left Wings. He is implied as one of John's friends in Planet Simpson. He also attented Marge's garage sale in We're on the Road to D'ohwhere. He made a brief speaking appearance discussing liberals in You Kent Always Say What You Want.

• "Bart's Girlfriend"
  • Jessica Lovejoy, (Meryl Streep) Reverend Lovejoy's rebellious, attention-seeking daughter and Bart's one-time girlfriend. When Bart first saw her at church Bart developed a crush on her, but she was irresponsive. After acting nice Bart felt funny and decided to play a trick on Groundskeeper Willie this then attracted Jessica to Bart. Later in the episode Bart convinces her to be a better person only to have Jessica steal the church collection plate money. Bart is then framed and then Lisa tells the truth that Jessica did it. Jessica has recently made several reappearances, in non-speaking roles. Before Bart developed a crush on her she went to boarding school. She was one of Bart and Homer's opponents in I, (Annoyed Grunt)-Bot and was a one of the teams Lisa was againist in Marge Gamer.

• "Homer Badman"
  • Ashley Grant, (Pamela Hayden) a grad student who babysits Bart, Lisa, and Maggie and later mistakenly believes Homer sexually harasses her.

• "Fear of Flying"
  • Dr. Zweig (Anne Bancroft) is a psychologist who tries to help Marge get over her fear of flying.

• "Homer the Great"
  • Number One (Patrick Stewart) is the head of the Springfield chapter of The Stonecutters, a secret society. The voice of Number One, Patrick Stewart, is considered one of the best single episode guest stars in the show's history by the show's producers.

• "Homie the Clown"
  • Don Vittorio DiMaggio (Hank Azaria) is Fat Tony's boss and a self-admitted Italian-American stereotype. He has since made brief non-speaking cameos in later episodes.

• "Bart vs. Australia"
  • Evan Conover, (Phil Hartman) a US government official who sells out the Simpsons to angry Australian officials.

• "Homer vs. Patty & Selma"
  • Ballet Teacher, (Susan Sarandon) a Russian ballet teacher.

• "A Star Is Burns"
  • Jay Sherman, (Jon Lovitz) a movie critic from New York City. Re-appeared in "The Ziff Who Came To Dinner" and "Hurricane Neddy".

• "Lisa's Wedding"
  • Hugh Parkfield, (Mandy Patinkin) a British college student who Lisa nearly marries in 2010.

• "Lemon of Troy"
  • Shelby, (Tress MacNeille) Bart's Shelbyville double.

Season 7

• "Sideshow Bob's Last Gleaming"
  • Colonel Leslie Hapablap, (R. Lee Ermey) a colonel at a local Air Force Base.

• "Marge Be Not Proud"
  • Don Brodka, (Lawrence Tierney) chief of security at the local Try-N-Save.

• "Lisa the Iconoclast"
  • Hollis Hurlbut (Donald Sutherland) is the head of the Springfield Historical Society. He seeks to keep the truth about Jebediah Springfield hidden from the public.

• "The Day the Violence Died"
  • Chester J. Lampwick, (Kirk Douglas) creator of Itchy, which was stolen by Roger Meyers, Sr.

• "A Fish Called Selma"
  • MacArthur Parker, (Jeff Goldblum) Troy McClure's agent.

• "Summer of 4 Ft. 2"
  • Erin (Christina Ricci), Ben (Harry Shearer), Rick (Hank Azaria) and Dean (Tress MacNeille) are Lisa's four friends in Summer of 4 Ft. 2 who live in the town of Little Pwagmattasquarmesettport.

Season 8

• "Treehouse of Horror VII"
  • Hugo Simpson (Nancy Cartwright) is Bart's (evil) siamese twin brother.Later found out that Hugo was the good one and Bart was evil.

• "You Only Move Twice"
  • Hank Scorpio (Albert Brooks) is an evil genius and cheerful, friendly owner of Globex Corporation. Scorpio is considered to be Albert Brooks' best voice performance on The Simpsons and for this and four other guest performances he was named the greatest guest star in the show's history by IGN, with his performance as Scorpio being named as his best. Brooks ad-libbed many of his lines.

• "The Homer They Fall"
  • Lucius Sweet (Paul Winfield) is a boxing manager who is a parody of Don King. Sweet also has a small speaking appearance in the Season 9 episode "The Trouble with Trillions".

• "Burns, Baby Burns"
  • Larry Burns, (Rodney Dangerfield) the long-lost son of Montgomery Burns. He appears in the unemployment office in Realty Bites.

• "Bart After Dark"
  • Belle, (Tress MacNeille) the owner of the Maison Derriere, a local burlesque house. She is not based on anyone and guest voice roles did audition.

• "Hurricane Neddy"
  • Dr. Foster, (Hank Azaria) Ned's phycologist as a child who treated Ned in the Clamwood Mental Hospital after his house gets destroyed. He appears again in It's A Mad, Mad, Mad, Mad Marge.

• "El Viaje Misterioso de Nuestro Jomer (The Mysterious Voyage of Homer)"
  • The Space Coyote (Johnny Cash) appeared in Homer's chili-induced hallucination. In his book Planet Simpson, Chris Turner states that Johnny Cash as the coyote is his favorite guest performance.

• "The Twisted World of Marge Simpson"
  • Frank Ormand, (Jack Lemmon) founder of the Pretzel Wagon company.

• "Simpsoncalifragilisticexpiala(Annoyed Grunt)cious"
  • Shary Bobbins, (Pamela Hayden) a magical British nanny.

• "The Itchy & Scratchy & Poochie Show"
  • Roy, (Harry Shearer) a teenager who briefly lives with the Simpson family. In the end of the episode he went to live in an apartment with two sexy ladies. He was originally planned to appear in Treehouse of Horror V .
  • Poochie (Dan Castellaneta) a dog character on Itchy and Scratchy who was added when Roger Meyers Jr. decided a new character should be on Itchy and Scratchy. He was voiced by Homer Simpson and was originally going to be voiced by Otto Mann and Troy McClure . He was anyway a hated character who got killed off via returning to his home planet and dying on the way. He reappeared in Treehouse of Horror IX getting ran over by a car and in Little Big Mom at Scratchy's funeral. He appears in The Simpsons Game in the level Grand Theft Scractchy hosting a concert eventually destroyed by Marge and Lisa. A Poochie balloon appears in Funeral for a Fiend.

• "Homer's Phobia"
  • John (John Waters), who is voiced by and modeled after John Waters, is the owner of Cockamamie's Collectibles Shop, an offbeat store filled with various "camp" items.

• "Homer vs. The Eighteenth Amendment"
  • Rex Banner (Dave Thomas) is a U.S. Treasury officer in Washington, D.C. briefly sent to Springfield to uphold Prohibition, and to replace Clancy Wiggum as Chief of Police. Rex Banner was based on Eliot Ness, the Treasury agent who led the famous Prohibition-enforcement team "The Untouchables".

• "In Marge We Trust"
  • Mr. Sparkle (Sab Shimono), mascot for a Japanese detergent company. He appears in The Simpsons Game voiced by Hank Azaria.

• "Homer's Enemy"
  • Frank Grimes (Hank Azaria) was a 35-year-old everyman who was the consummate professional, which clashes with Homer Simpson's idiocy. He was eventually driven insane by Homer's actions and was killed. He was mentioned in a later episode when Homer said "Oh look a programme from that guys funeral" to which Marge replies "you mean Frank Grimes", Homer "Yeah I wonder what happened to that guy." In Treehouse of Horror XII he was on a wall of Lord Montymort's captured people. His tombstone appears in Alone Again, Natura-Diddily and in My Mother The Carjacker.

• "The Simpsons Spin-Off Showcase"
  • Big Daddy, (Gailard Sartain) a New Orleans-based criminal who steals the Louisiana governor's mansion and kidnaps Ralph Wiggum.

• "The Secret War of Lisa Simpson"
  • The Commandant, (Willem Dafoe) the commandant of Rommelwood Academy.

Season 9

• Episode 4F23 - "The Principal and the Pauper"
  • The real Principal Seymour Skinner (Martin Sheen), the real Skinner and Armin Tamzarian were buddies in the Vietnam War. After the real Skinner was supposedly killed, Tamzarian stole his name and took over Skinner's life. The resulting episode was one of the most controversial among the fans and is disliked by several members of the production staff, including Matt Groening and Harry Shearer.

• "The Two Mrs. Nahasapeemapetilons"
  • Apu’s Mother, (Andrea Martin) Apu's mother, who comes to Springfield with the intent to enforce Apu's arranged marriage.

• "Bart Carny"
  • Cooter (Jim Varney) and Spud, (Tress MacNeille) father and son carnies.

• "The Joy of Sect"
  • The Leader, (Hank Azaria) the founder of the Movementarian cult. He had people join by telling them they would go to a planet Blisstonia and would take their to build a rocket ship to escape Earth.

• "Dumbbell Indemnity"
  • Renee, (Helen Hunt) Moe's one-time girlfriend.

• "Simpson Tide"
  • Captain Tenille, (Rod Steiger) the captain of the USS Jebediah nuclear submarine, which Homer was stationed on. He was fired out of a torpedo shooter leaving Homer as captain.

• "The Trouble with Trillions"
  • Agent Johnson (Harry Shearer) Homer's agent who is in pursuit of Mr. Burns' trillion dollar bill.

• "Trash of the Titans"
  • Ray Patterson, (Steve Martin) former Springfield sanitation commissioner.

• "King of the Hill"
  • Brad (Brendan Fraser) and Neil, (Steven Weber) marketers for Powersauce energy bars.

Season 10

• "Lard of the Dance"
  • Alex Whitney (Lisa Kudrow), a new girl at Springfield Elementary who has a cell phone, credit cards, and holds a school dance.

• "D'oh-in in the Wind"
  • Seth (George Carlin) and Munchie (Martin Mull), two aging hippies-turned-businessmen, who were friends of Homer's mother.

• "Mayored to the Mob"
  • Leavelle (Mark Hamill), a bodyguard trainer.

• "Sunday, Cruddy Sunday"
  • Wally Kogen (Fred Willard), a travel agent.

• "Homer to the Max"
  • Trent Steele (Hank Azaria), a rich environmentalist who befriends Homer as "Max Power."

• "Maximum Homerdrive"
  • Red Barclay (Hank Azaria), a trucker.

• "Mom and Pop Art"
  • Astrid Weller, (Isabella Rossellini) an artist.

• "Monty Can't Buy Me Love"
  • Jerry Rude (Michael McKean), a radio shock jock.

• "They Saved Lisa's Brain"
  • The Photography Lady (Tress MacNeille), a photographer who took pictures of Homer after he stole runner-up prize for a contest. She was a major part of the sub-plot.

• "Thirty Minutes over Tokyo"
  • Wink (George Takei), a Japanese gameshow host.

Season 11

• "Beyond Blunderdome"
  • Edward Christian (Jack Burns), an executive at Polystar Pictures.

• "Guess Who's Coming to Criticize Dinner?"
  • Lifeways Editor (Edward Asner), the editor of the Springfield Shopper. Homer's boss as a food critic.

• "Eight Misbehavin'"
  • Larry Kidkill (Garry Marshall), owner of Springfield Zoo. Put Apu and Manjula's kids in a zoo when they could not be tooken care of properly.

• "Take My Wife, Sleaze"
  • Meathook (John Goodman) and Ramrod (Henry Winkler), members of the "Hell's Satans" biker gang. The two reappear, along with the rest of the Hell's Satans, in a crowd shot in "Mr. Spritz Goes to Washington".

• "Grift of the Magi"
  • Jim Hope (Tim Robbins), a marketer for the "Kids First" toy company.

• "Faith Off"
  • Brother Faith (Don Cheadle), a faith healer.

• "Bart to the Future"
  • The Casino Manager (Hank Azaria), Manager of a Native American casino who tells Bart his future.

• "Kill the Alligator and Run"
  • Southern Sheriff (Diedrich Bader), the sherif of Six Toe County, Florida.

• "Last Tap Dance in Springfield"
  • Little Vickie Valentine (Tress MacNeille), a 1930s child star-turned-dance instructor. In the level of Grand Theft Scratchy in The Simpsons Game a redesigned building shows her tap dancing school.

• "It's A Mad, Mad, Mad, Mad Marge"
  • Becky (Parker Posey), Otto's ex-fiancee.

Season 12

• "Insane Clown Poppy"
  • Sophie (Drew Barrymore), the daughter of Krusty the Klown and a Gulf War veteran. She makes a minor reappearance in "Marge Gamer".

• "Lisa the Tree Hugger"
  • Jesse Grass (Joshua Jackson), a radical environmentalist.

• "The Computer Wore Menace Shoes"
  • Number 6 (Patrick McGoohan), a prisoner on a mysterious island.

• "The Great Money Caper"
  • Devon Bradley (Edward Norton), an actor.

• "Pokey Mom"
  • Jack Crowley (Michael Keaton), an artistic prisoner.

• "Hungry Hungry Homer"
  • Howard K. Duff VII (Stacey Keach), owner of the Istopes Stadium who tries to sell it to Albuquerque, Mexico. Makes a breif speaking appearance in Homer and Marge Turn a Couple Play.

• "Bye Bye Nerdie"
  • Francine Rhenquist (Kathy Griffin), a new bully at Springfield Elementary.

• "Simpson Safari"
  • Dr. Joan Bushwell (Tress MacNeille), a primatologist.

• "Trilogy of Error"
  • Thelonious (Frankie Muniz), a student at West Springfield Elementary.

• "Simpsons Tall Tales"
  • Singing Hobo (Hank Azaria), a hobo on a train from Springfield to Delaware.

Season 13

• "Treehouse of Horror XII
  • The Gypsy (Tress MacNeille) gypsy who turned Marge, Bart, Lisa, and Maggie into mutants and killed Lenny, Carl, and Moe after she cursed Homer for destroying her lair was stopped by marrying a lepherchaun.
  • Ultrahouse 3000 (Pierce Brosnan, Dan Castellaneta (imitating Dennis Miller), and Matthew Perry) a robotic house bought by Marge who wanted to kill Homer.

• "A Hunka Hunka Burns in Love"
  • Gloria (Julia Louis-Dreyfus) is a cop who falls in love with Mr. Burns. She later runs off with Snake. She makes a reappearance in "I Don't Wanna Know Why the Caged Bird Sings", visiting Snake in prison.

• "The Blunder Years"
  • Waylon Smithers Sr. (Harry Shearer) Smithers' father who was Burns' assistant at the time. He died when he risked his life to save his son.
  • Mesmirino (Hank Azaria) A hypnotist who shows Homer his life as a twelve year old kid.

• "Brawl in the Family"
  • Gabriel (Delroy Lindo), a social worker.

• "Sweets and Sour Marge"
  • Garth Motherloving (Ben Stiller), CEO of the Motherloving Sugar Co.

• "The Bart Wants What It Wants"
  • Greta Wolfcastle (Reese Witherspoon) is the daughter of famous actor Rainier Wolfcastle and the romantic interest of Bart. After Bart decided she was becoming too needy, he broke up with her, which led to Greta dating Milhouse to get back at him. She has since made brief cameo appearances in later episodes.

• "The Lastest Gun in the West"
  • Buck McCoy (Dennis Weaver), an aging Western star.

• "The Old Man and the Key"
  • Zelda (Olympia Dukakis), a one-time girlfriend of Grampa's, who only loved him for his driver's license.

• "Blame it on Lisa"
  • Ronaldo (Tress MacNeille), a Brazilian orphan who Lisa sponsors.

• "The Sweetest Apu"
  • Annette (Pamela Hayden), the squishee supplier whom Apu has an affair with. Was rumored to be voiced by Kathie Lee Gifford.

• "Little Girl in the Big Ten"
  • Tina (Tress MacNeille) and Carrie (Pamela Hayden), two college girls who pass for eight-year-olds.

• "The Frying Game"
  • Mrs. Bellamy (Frances Sternhagen), an old woman who is killed, and Marge and Homer are framed for her [...]. She is actually Carmen Electra.

Season 14

• "Treehouse of Horror XIII"
  • Homer's Clones (Dan Castellaneta) clones of Homer created after Homer slept on a magic hammock. There are six odd ones including Peter Griffin from Family Guy, Tracey Ullman Homer, a Homer wearing glasses, a Homer with a huge forehead, a Homer with no face, and King-Size Homer.

• "Bart vs. Lisa vs. The Third Grade"
  • Audrey McConnell (Tress MacNeille) Third Grade teacher at Springfield Elementary School. She is a good teacher unlike Edna Krabappel or Miss Hoover until the buddy system fails.

• "Helter Shelter"
  • Mitch Hartwell (Hank Azaria) Producer of an 1895 themed TV show.

• "The Great Louse Detective"
  • Frank Grimes, Jr. (Hank Azaria) is the son of Frank Grimes who tries to kill Homer as revenge for his father's death.

• "The Dad Who Knew Too Little"
  • Dexter Colt (Hank Azaria), a private detective whom Homer hires.

• "A Star Is Born-Again"
  • Sara Sloane (Marisa Tomei), a movie star who dates Ned Flanders.

• "Three Gays of the Condo"
  • Grady (Scott Thompson) and Julio (Hank Azaria), a gay couple Homer lives with after leaving Marge. Julio reappears in "There's Something about Marrying," marrying another man, and in "I Don't Wanna Know Why the Caged Bird Sings" as one of the hostages.

• "Dude, Where's My Ranch?"
  • Luke Stetson (Jonathan Taylor Thomas), Lisa's boyfriend at a dude ranch.
  • Cookie (Karl Wiedergott), hand at dude ranch.

• "Old Yeller Belly"
  • Howard K. Duff VII" (Stacey Keach), President of Duff Beer. He is not to be confused with Howard K. Duff from Hungry Hungry Homer. The difference is the Roman numeral at the end of both of their names and their clothing. This one wears a black jacket while the other one wears a suit and tie.

Season 15

• "Treehouse of Horror XIV"
  • Professor John Frink Sr. (Jerry Lewis) is the father of Professor Frink, with whom he never really got along well.

• "The Regina Monologues"
  • Edwina (Jane Leeves), Grandpa's British girlfriend during World War II.
  • Abbie (Dan Castellaneta), Homer's half sister.

• "The Fat and the Furriest"
  • Grant Conner (Charles Napier), a hunter.

• "Smart and Smarter"
  • Henry (Simon Cowell), the admissions officer at a private school for infants.

• "The Wandering Juvie"
  • Gina Vendetti (Sarah Michelle Gellar) is a young girl who is in a juvenile prison for girls.

Season 16

• "She Used to Be My Girl"
  • Chloe Talbot (Kim Cattrall) is Peabody Award winning reporter from the Global Television Network who was high school friends with Marge.

• "Pranksta Rap"
  • Alcatrazz (Hank Azaria), a rapper.

• "There's Something About Marrying"
  • Veronica (Tress MacNeille), a lesbian pro golfer who nearly marries Patty. She is actually a man who dressed up as a girl to get into the LPGA.

• "Goo Goo Gai Pan"
  • Madam Wu (Lucy Liu), a Chinese Bureaucrat.

• "Future-Drama"
  • Jenda (Amy Poehler) is Bart's girlfriend in the flash-forward to eight years into the future.

• "Don't Fear the Roofer"
  • Ray Magini (Ray Romano), a roofer who Homer befriends.

• "The Heartbroke Kid"
  • Tab Spangler (Albert Brooks), a counselor at a fat camp.

• "A Star Is Torn"
  • Clarissa Wellington (Fantasia Barrino), a young singer who comes in third at the Li'l Starmakers competition.

• "The Father, The Son, and The Holy Guest Star"
  • Father Sean (Liam Neeson), a Catholic priest.

Season 17

• "Bonfire of the Manatees"
  • Caleb Thorn (Alec Baldwin), a marine biologist.

• "The Girl Who Slept Too Little"
  • Gravedigger Billy (Dan Castellaneta) Groundskeeper Willie's brother who is a gravedigger at the cemetery next to 742 Evergreen Terrace .

• "Treehouse of Horror XVI"
  • David (Tress MacNeille), a robot boy who replaced Bart when he was in a coma. He was destroyed by Bart in the end of the segment.

• "The Last of the Red Hat Mamas"
  • Tammy (Lily Tomlin), leader of the Cheery Red Tomatoes, a women's society.

• "The Italian Bob"
  • Francesca (Maria Grazia Cucinotta), Sideshow Bob's wife. Makes a few background appearances in Funeral for a Fiend
  • Gino Terwilliger (Tress MacNeille), Sideshow Bob's son. Made a brief speaking appearance in Funeral for a Fiend.

• "Homer's Paternity Coot"
  • Mason Fairbanks (Michael York) is a treasure hunter who Homer believed may be his biological father.

• "My Fair Laddy"
  • Coach Krupt (Hank Azaria) New gym teacher at Springfield Elementary School. He is obssesed with Bombardment and plays it by throwing balls at kids rentlessly.

• "Homer Simpson, This is Your Wife"
  • Charles (Ricky Gervais), an office manager who swaps wives with Homer for a reality show and falls for Marge.
  • Verity (Tress MacNeille), Charles's wife who Homer is forced to live with after him and Charles swap wives. She is very srict and is rude to Bart and Lisa.

• "Girls Just Want To Have Sums"
  • Melanie Upfoot (Frances McDormand), the principal of a gender-segregated Springfield Elementary.

• "The Monkey Suit"
  • Wallace Brady (Larry Hagman), a lawyer representing intelligent design in a lawsuit who helped defend Ned Flanders in a courtcase about the teaching of creationism in public schools. He is an overweight unintellegent lawyer from Texas.
  • Clarice Drummond (Tress MacNeille) Prof. Frink's lawyer who helped defend Lisa in a courtcase about the teaching of creationism in public schools. She is a scientsit from New York .

• "Marge and Homer Turn a Couple Play"
  • Tabitha Vixx (Mandy Moore), a pop diva married to a Springfield Isotope.
  • Buck Mitchell (Hank Azaria), Tabitha's husband and Springfield Isotope player.

Season 18

• "The Mook, the Chef, the Wife and Her Homer"
  • Dante Calabresis (Joe Pantoliano) and Dante Calabresis Jr. (Michael Imperioli) are mobsters who are rivals of Fat Tony.
  • Michael D'Amico (Pamela Hayden) Fat Tony's son who Lisa makes friends with.

• "Jazzy and the Pussycats"
  • Skinny Turner (Harry Shearer) and Marcus Marbles (Hank Azaria) are two Jazz Musicians that let Bart be in their band.

• "G.I. (Annoyed Grunt)"
  • The Army Colonel (Kiefer Sutherland) is an army colonel.

• "The Wife Aquatic"
  • Billy (Maurice LaMarche), "Portuguese" Fausto (Hank Azaria) and the Skipper (Hank Azaria) are three members of the crew of the boat "The Rotting Pelican".

• "Little Big Girl"
  • Darcy (Natalie Portman) is Bart's pregnant girlfriend in North Haverbrook.

• "Yokel Chords"
  • Dr. Stacey Swanson (Meg Ryan) is a psychiatrist who is assigned to treat Bart Simpson. They both form a close bond, and after the last session, Swanson is forced to see another psychiatrist.
  • Withney (Tress MacNeille), Jitney (Tress MacNeille), Dubya (Tress MacNeille), Incest (Dan Castellaneta), Crystal [...] (Nancy Cartwright), International Harvester (Nancy Cartwright), and Birthday (Pamela Hayden) Seven children of Cletus Spuckler that Lisa tutors when Springfield Elementary School rejects them. Lisa then takes them on a field trip to Downtown Springfield where they all sing a song however Krusty sees them and makes them singers on his show. However the real case is the seven are actually children of Brandine Spuckler.

• "Homerazzi"
  • Tabloid editor (J.K. Simmons) is a tabloid editor. He shares some of the characteristics of J. Jonah Jameson, a Spider-Man character who Simmons is famous for portraying in the Spider-Man movies.
  • Enrico Irritazio (Jon Lovitz) is a professional paparazzo that Rainier Wolfcastle hires to take out Homer.

Season 19

• "He Loves to Fly and He D'oh's"
  • Colby Krause (Stephen Colbert), Homer's life coach who helped him pursue a job in safety inspector of a plane.

• "The Homer of Seville"
  • Julia (Maya Rudolph), Homer's fan who attempted to seduce him; she resorted to [...] after he fired her from working for him.

• "Midnight Towboy"
  • Louie (Matt Dillon), a tow truck driver who gave Homer a job, but in the end turned out to be his enemy and stuffed him in his basement.

• "I Don't Wanna Know Why the Caged Bird Sings"
  • Dwight David Diddlehopper (Steve Buscemi), a criminal who got arrested after a bank robbery. Marge promised she would visit him in prison. However Marge didn't and he kidnapped Marge and took her to an amusement park his mom abandoned him at when he was a kid. There he got injured and sent to jail. Marge then visited him in the end.

• "Little Orphan Millie"
  • Uncle Norbert Van Houten (Hank Azaria) Milhouses' Indiana Jones-esque Danish uncle who despises the Dutch side of the Van Houten family

• "Husbands and Knives"
  • Milo (Jack Black), a local comic book store owner who works right across from Comic Book Guy.

• "Funeral for a Fiend"
  • Dr. Robert Terwillger, Sr. (John Mahoney) is Bob and Cecil Terwilliger's father. He tried to find proof that his son has gone insane due from abuses from Bart.
  • Dame Judith Underdunk (Tress MacNeille) is Bob and Cecil's mother and a former Shakespearean actress.

The Simpsons Movie

• Russ Cargill (Albert Brooks) - Cargill is a successful businessman and the head of the Environmental Protection Agency (abbreviated as EPA) and the main antagonist of the film. After Homer pollutes Lake Springfield and causes the wildlife to mutate, Cargill presents this disturbing information to the President and convinces him to approve a plan to deal with the situation. To this end, Cargill has a giant dome lowered on top of Springfield, sealing the city and its inhabitants off from the rest of the world. He later attempts to have Springfield, as well as its citizens, demolished into "the 'new' Grand Canyon". In the end, he is knocked out by Maggie with a boulder on top of Springfield Gorge when Russ is about to shoot Homer. Cargill's motivations for trapping Springfield under the dome, although not explicitly stated, most likely stem from owning the company that built the dome and simply having gone mad with power. The deleted scenes on the Movie DVD shows that Cargill was originally going to be an older man in a sweater vest and quiff.
• President Arnold Schwarzenegger (Harry Shearer) - President Schwarzenegger (a near replica of Rainier Wolfcastle, who is himself a parody of Schwarzenegger) is the President in the world of Springfield. He appears to be inept, shown by his phrase of "I was elected to lead, not to read". He is also easily manipulated by Russ Cargill into authorizing entrapment and later destruction of Springfield.
• Colin (Tress MacNeille) is an environmentalist who had moved to Springfield from Ireland. He soon falls in love with Lisa, and the film ends leaving both of them holding hands. In the beginning of the film Lisa believed that Colin's dad was Bono since Colin was Irish and he said his father was a musician; Colin repeatedly says that his father is not Bono.
• Boob Lady (Tress MacNeille) - The Medicine Woman is an Alaskan Inuit who first appears in the wilderness of Alaska, warding off a polar bear who comes close to eating Homer. After reviving Homer, she helps him reach an epiphany, showing he has to care about others as much as himself. Homer refers to her as "Boob Lady" as a reference to her large breasts.

See also

es:Anexo:Personajes aparecidos una sola vez en Los Simpson fr:Personnages uniques des Simpson nl:Lijst van eenmalige personages in The Simpsons