List of All That characters

This is a listing of each cast member's most notable and/or recurring characters on the Nickelodeon sketch comedy show All That, accompanied by a brief description of each character as well as each actor's time on the show.

Regular cast

First run (seasons 1–6)

Josh Server (The only cast member who appeared in the entire 1st run) (seasons 1–6)

• Walter the Earboy (high school student with ridiculously large ears) (Seasons 1–3 & 5)
• Detective Dan (a clumsy, incompetent, delusional police detective, spoof of Dick Tracy) (Seasons 2–6)
• Milkman (nemesis of Superdude. Rogue milkman spoof of The Joker.) (Seasons 1–3)
• Dairy Godfather (the godfather of all dairy, enemy of Superdude. spoof of Marlin Brando's character) (season 5)
• Mumbly Spice (Spice Boy with poor articulation) (Seasons 5 & 6)
• Bernie Kibbitz (old Yiddish man, claims to be 130 years old. Frequent customer of Good Burger) (Seasons 3–6)
• Dusty Pants (cowboy student in Miss Fingerly's class) (Seasons 3 & 4)
• 'Squash'-Hick (hayseed who enjoys fishing, buses, & his friend Squash Boy) (Seasons 3 & 4)
• Tandy Spork (highly medicated vegetarian secretary of Dullmont Junior High) (Seasons 3–5)
• Ray Borealis (reporter of Channel 6½ News, often in disgusting or perilous places) (Seasons 5 & 6)
• Jimmy Bond (teenage secret agent one-seventh, spoof of James Bond) (Seasons 1 & 4–6)
• Studs Wilkinson (sidekick to Francis the Caveman, spoof of Ed McMahon) (Season 6)
• Jerry Fytootal (later Jerry Futile) (host of game shows "You Can't Win" & "Cockroaches in Your Pants") (Season 3, 5 & 6)
• Julio (cafeteria worker at Dullmont Junior High under peas-loving Miss Piddlin) (Seasons 3–5)
• Flem (savage, disgusting teen, spoof of Goofus from Goofus & Gallant) (Seasons 2–4)
• Toby Braun (former fitness expert, makes informercials for seemingly useless items, spoof of Tony Little) (Season 4 & 6)
• Julius (member of Cloudy Knights singing group, pulled a cat from his afro) (Season 4)
• Fizz (drive-through guy at Good Burger. Called Marty in his first appearance in the sketch, role later reprised in the movie version of the sketch) (Seasons 2–5)
• Allen (professional cereal critic, reviews cereal like "Lucky Germs" and "Fruit Poots" with his partner Alan) (Season 1)
• Officer Canker (serves on USS Spaceship under Captain Tantrum, spoof of Mr. Spock on Star Trek) (Seasons 3 & 4)
• Dr. Bynes (very disgusting dentist) (Seasons 3 & 4)
• Mr. McToad (hideous half-man/half-toad seeking help from the Wizard of Cos) (Season 2)
• Voice Of The Don't Do This At Home Or School Sketches (Voice Who Tells The Audience What Not to Do At Home or school) (Season 5)
• Mack Takahashi (co-anchor of Channel 6½ Sports, not related to Jack Takahashi) (Season 5)
• Emily Maroon (Lump and Chuck Maroon's Brother Who Always Laughs) (Season 3)
• Maggot (Lead singer of the band, Bacteria) (Seasons 2–4)

Kel Mitchell (seasons 1–5)

• Ed (clueless Good Burger counter clerk, known for multiple catchphrases, role later reprised by Coleman and in the movie version of the sketch) (Seasons 1–5)
• Okrah (talk show host, spoof of Oprah) (Seasons 2 & 3)
• Pizzaface (Earboy's sensitive best friend, has a slice of pepperoni pizza for a face) (Seasons 1–3)
• Lump Maroon (Emily and Chuck Maroon's brother who says nothing but "Jupiter!" and pops up in random sketches) (Seasons 3–5)
• Clavis (elderly best friend of Mavis) (Seasons 1–5)
• Peter (well-mannered teen, spoof of Gallant from Goofus & Gallant) (Seasons 2–4)
• Coach Kreeton (crabby Dullmont Junior High athletic coach who suffers many unfortunate accidents. he lists synonyms for words ["hall pass,ticket,slip" for example]) (Seasons 1–5)
• Disco (member of Cloudy Knights, easily manipulated by girlfriend Yoko) (Season 4)
• Repairman-man (insane "hero" who "repairs" things with a sledgehammer or any type of dangerous tool and echos his own name. He never seems to be able to fix that big hole in the roof he always makes when entering) (Seasons 2–5)
• Officer Colby (member of the Cheese Police) (Seasons 1, 2 & 4)
• Singo (navigator/gunner of USS Spaceship, sings everything he says, spoof of Dr. McCoy on Star Trek) (Season 3 & 4)
• Alan (professional cereal critic, reviews weird cereal with Allen) (Season 1)
• Dr. K (radio advice show host) (Seasons 1 & 2)
• Yo-Gurl (woman made of yogurt, enemy of Superdude) (season 3)
• Cow-Boy (half-man, half-cow, enemy of Superdude) (season 4)
• Butter Boy (man made of butter, enemy of Superdude) (season 2)
• Steve Urkel (spoof of the Family Matters character) (Season 1)
• Pasta Mon (a "Pastafarian" man made of noodles who has no sauce, seeks help from the Wizard of Cos) (Season 2)
• "Squash Boy" (character which never appeared due to costume problems, sometimes played by Kenan) (Season 3)
• Dr. Prober (Ishboo's doctor) (Seasons 2 & 3)

Kenan Thompson (seasons 1–5)

• Superdude (lactose-intolerant teenage superhero, spoof of Superman) (Seasons 1–5)
• Pierre Escargot (man wearing raincoat in a bathtub, teaches absurd French phrases) (Seasons 1–5)
• Lester Oaks, Construction Worker (a construction worker who always says his job as part of his name. Frequent customer of Good Burger) (Seasons 1–5)
• Burt Spice/Spice Cube (Spice Boy who was kicked out for being nerdy, so came back as a rapper, spoof of rapper/actor Ice Cube and the Spice Girls) (Season 5)
• Randy (chocolate-loving TV chef) (Seasons 1–4)
• Mavis (elderly best friend of Clavis) (Seasons 1–5)
• Principal William..... Baines...... Pimpell (Dullmont Junior High principal with throbbing blemish on his forehead and a lisp) (Seasons 2–5)
• Miss Piddlin (occasionally violent lunch lady who loves peas) (Seasons 3–5)
• Fred Mertz (African-American version of original I Love Lucy character) (Season 4)
• Ishboo (possibly fraudulent foreign-exchange student who relies on pity to get his way and has incredibly weird foreign customs) (Seasons 1–3)
• Bradley the Big-Ol' Baby (an enormous bratty infant) (Season 3)
• LaNeesha (self-centered ghetto female convenience store employee, best friend of LaTanya) (Season 5)
• Antoine (short-tempered 60's-70's guy with an afro and a Cloudy Knights member who appears in other sketches as well) (Seasons 3–5)
• Nasty Nancy (nasty outlaw cowboy because of his name, enemy of Dusty Pants) (Seasons 3 & 4)
• Baggin' Saggin' Barry (teenager with enormous pants which contain a wide variety of strange items) (Seasons 1 & 2)
• Bill Cosby (a spoof of the real-life comedian, also known as the "Wizard of Cos". spoof of the "Wizard of Oz") (Seasons 1 & 2)
• Officer Ulcer (serves on the USS Spaceship under Captain Tantrum, spoof of Mr. Scott on Star Trek) (Seasons 3 & 4)
• Coldfinger (nemesis of Jimmy Bond, has ice-covered right index, spoof of Goldfinger) (Seasons 1 & 4)
• Seymour (mute boy who reacts to various things) (Season 5)
• "Squash Boy" (character which never appeared due to costume problems, sometimes played by Kel) (Season 3)
• Jack Takahashi (co-anchor of Channel 6½ Sports, not related to Mack Takahashi) (Season 5)
• Spew (Drummer of the band, Bacteria) (Seasons 2–4)

Amanda Bynes (seasons 3–6)

• Ashley (short-fused advice-giver who receives many seemingly obvious questions) (Seasons 3–6)
• Gina (teenybopper valley girl co-host of "What-everrrrr!") (Seasons 4–6)
• Jiffy Springs (pop singer, spoof of Britney Spears) (Season 6)
• Captain Tantrum (adolescent commander of USS Spaceship, spoof of Captain James T. Kirk on Star Trek) (Seasons 3 & 4)
• Skye (spacey artisan) (Season 5)
• Megan Marples (geeky girl with many hidden talents) (Seasons 4 & 5)
• Lucy Ricardo (spoof of the I Love Lucy protagonist) (Season 4)
• Lactose Intolerance-Definer (reprising Katrina Johnson's role after Johnson left the show) (Seasons 4 & 5)
• Classical music girl (plays multiple classical instruments in extremely inappropriate situations or ways) (Seasons 3 & 4)
• Dr. Debbie (cheerleading physician) (Season 6)
• 'Squash'-Girl (companion to 'Squash'-hick) (Season 3)
• Evil Superdude (impostor who people could not tell apart from the real superhero, spoof of Bizarro) (Season 3)
• Sally (An assistant to Mr. Big in a Jimmy Bond sketch) (Season 6)
• Penelope Taynt (recurring character from The Amanda Show, used in a season 7 episode)

Lori Beth Denberg (seasons 1–4)

• Vital Information anchor (girl who imparts pearls of wisdom to audience) (Seasons 1–4, role was then taken up by Tamberelli in Seasons 5 & 6, then later by Lil' JJ in Season 10)
• Fran (cynical, short-tempered girl stranded on an island with Kiki) (Seasons 2 & 3)
• Miss Fingerly (barely competent Dullmont Junior High teacher) (Seasons 1–4)
• Ms. Hushbum (a hypocritically loud librarian, hates when others make sound, literally) (Seasons 2–4)
• Complaint Department Lady (IQ-impaired customer service employee) (Seasons 2–4)
• Ethel Mertz (spoof of the I Love Lucy character) (Season 4)
• Connie Muldoon (eccentric frequent customer of Good Burger, despite constant trouble with Ed. Muldoon was one of the few All That characters that returned for Good Burger) (Seasons 1–4)
• Manager (owner of "We Got Pants", a store that carries only one pair of slacks) (Season 4)
• Thumbtax (hostile queen of the Thumbtax race, has ridiculous lisp, enemy of the USS Spaceship crew, spoof of the Borg Queen on Star Trek) (Season 3)
• Sweaty Woman (Woman who constantly sweats. Appears in Superdude sketchs) (Seasons 3 & 4)
• Jenny Plus (Mean Girl Who Steals Earboys Election Idea In Earboy's School) (Season 1)
• Mrs. Fern Maroon (Lump, Chuck and Emily Maroon's Mother and Grover Maroon's wife, Usually When Someone Calls or Knocks, She Answers To Random Objects) (Season 3)

Leon Frierson (seasons 4–6)

• Leroy (a irritable responsibility-hating young kiddie-show host, enjoys attacking his annoying puppet co-star, Fuzz) (seasons 4–6)
• Pillow Boy (sidekick to Boring Man, places pillows under sleeping criminals) (Season 6)
• Billy Fuco (loud boy who enjoys saying his own name) (Seasons 4–6)
• C.J. (short, cute leader of the Cloudy Knights, has biggest afro in the group) (Season 4)
• Repairboy-boy (Repairman's second opinion) (Season 4)
• Lester Oaks, Construction Worker, Jr. (son of Lester Oaks, Construction Worker) (Season 5)
• Mr. Big (enemy of Jimmy Bond, possible spoof of similar villain from James Bond) (Season 6)
• Boy In The Don't Do This At Home Or School Sketches (Boy Who Demonstrates What Not To do At School Or At Home) (Season 5)
• Bill (Man Who appears in Cheeseburger Doyle Sketches) (Season 6)

Christy Knowings (seasons 4–6)

• Brenda Stone (self-absorbed, lazy news anchorwoman) (Seasons 5 & 6)
• Jessica (teenybopper co-host of "What-everrrrr!") (Seasons 4–6)
• Winter Wonders (host of "What Do You Do", spoof of Summer Sanders) (Season 4)
• Yoko (manipulative girlfriend of Disco, spoof of Yoko Ono) (Season 4)
• Hot Toe (enemy of Jimmy Bond, vixen with a big toe full of volcanic lava) (Season 4)
• Lt. Fondue (second communications officer of USS Spaceship under Captain Tantrum, spoof of Lt. Uhura on Star Trek) (Season 4)
• Jenny (assistant to Dr. Bynes) (Season 4)
• Gloria Bankhead (home decorator, spoof of Martha Stewart) (Season 6)
• Ethyl Kibbitz (Bernie's wife) (Season 4)
• Miss Ernestine Klump (barely competent Dullmont Junior High teacher, replaced Miss Fingerly) (Seasons 5 & 6)
• Penny Lane (reprising Bates and Reyes' role as Superdude's damsel in distress, spoof of Lois Lane) (Seasons 4 & 5)
• Miss Williams (President of Dudco Enterprises, LaTanya's boss) (Season 6)
• Helga (Toby Bruan's Assistant, Strong Girl) (Season 4)
• LaTasha (Enemy Of Latanya And Lanisha) (Season 5)
• Lulu (Baby who discuses topics with brother Chester) (Season 6)
• Milly Fuco (Billy Fuco's Mom) (Season 6)
• Nancy (A stewardess of Turblent Airlines) (Season 6)

Alisa Reyes (seasons 1–3)

• Kiki (upbeat, perky girl stranded on an island with Fran) (Seasons 2 & 3)
• Penny Lane (reprising Bates' role as Superdude's Damsel-in-distress, role later reprised by Knowings) (Season 3)
• Tinsel Teeth (Earboy's friend, has Christmas decor for teeth) (Season 1)
• Sally (Popular Girl in Earboy's school who he has a crush on but thinks he's a freak b/c of his large ears) (Seasons 1–3)
• Susumi (communications officer of USS Spaceship under Captain Tantrum, spoof of Lt. Uhura on Star Trek) (Season 3)
• Baggin' Saggin' Mary (Competition To Bagging Sagging Barry) (Season 2)
• Chuck Maroon (Sister To Lump and Emily Maroon who always plays with her fingers) (Season 3)
• Rash (First bassist of the band, Bacteria) (Seasons 2 & 3)

Danny Tamberelli (seasons 4–6)

• Vital Information anchor (took over role after Denberg left the show) (Seasons 5 & 6)
• Hairy Spice (Spice Boy with thick body hair and English accent) (Seasons 5 & 6)
• Boring Man (the dullest superhero ever with the power to bore people to sleep) (Season 6)
• Janitor Gasious (cranky, disgusting Dullmont Junior High janitor, burps constantly) (Seasons 4 & 5)
• Francis the Caveman (primitive talk show host appeared in other sketches) (Seasons 5 & 6)
• Jack Campbell, Fat Cop (overweight policeman who uses crime scene investigations as an excuse to eat victims' food) (Season 4)
• Cheeseburger Doyle (voice only; a talking sandwich private detective who squirted mustard at suspects) (Season 6)
• Ralph Forrester (Aussie nature expert, spoof of Steve Irwin and Nigel Thornberry) (Season 6)
• Cruton (enemy Of USS Spaceship, Made Of Crutons, spoof of Khan on Star Trek) (Season 4)
• Bo Stallion (reporter of Channel 6½ Sports) (Season 5)
• Helga Schlumpkenfist (short tempered girl with a Dutch accent) (Seasons 5 & 6)
• Bwah (Second bassist of the band, Bacteria after Rash left) (Season 4)

Katrina Johnson (seasons 1–3)

• Ross Perot (crazy billionaire and mentor to Earboy, spoof of the politician) (Season 1–3)
• Roseanne Barr (spoof of the raunchy comedian) (Seasons 1 & 2)
• Lactose Intolerance-Definer (appears in Superdude skits to define "lactose-intolerant" to nearby civilians, role later reprised by Bynes) (Seasons 1–3)
• Lemonade Scammer (young girl selling lemonade from a curbside stand and scamming people out of their money sometimes using pity, guilt, or just plain crying) (Seasons 1–3)
• Dorothy (Main character in "The Wizard Of Cos,L spoof of Dorothy from The Wizard Of Oz) (Season 2)
• Bouncer Girl (A Bouncer Who Wont Let Any One Get Past Her) (Season 1)
• Didi (Kiki's younger sister, only appeared once) (Season 3)

Angelique Bates (seasons 1 & 2)

• Mandy (chocolate-loving TV chef, former co-host to Randy) (Seasons 1 & 2)
• Steve Urkel (spoof of the Family Matters character) (Seasons 1 & 2)
• Four Eyes (Earboy's girlfriend, has four eyes) (Season 1)
• Penny Lane (Superdude's damsel in distress spoof of Lois Lane, role later reprised by Alisa Reyes) (Seasons 1 & 2)
• Beth (Good Burger Trainee who Ed is in love with) (Seasons 1 & 2)

Nick Cannon (seasons 5 & 6)

• Sweaty Spice (Spice Boy who constantly perspires) (Seasons 5 & 6)
• LaTanya (self-centered female convenience store employee; Cannon later kept the character for his spinoff The Nick Cannon Show) (Seasons 5 & 6)
• Bingo (guy with giant afro) (Seasons 5 & 6)
• Bank Robber (A bank robber in a superhero sketch called Boring Man) (Season 6)

Mark Saul (seasons 5 & 6)

• Stuart (crazy young man who kidnaps people and tries to do their jobs) (Seasons 5 & 6)
• Arnie Fishback (nerdy boy) (Season 5)
• Andre (Gloria Bankhead's mute assistant, constantly annoys her) (Season 6)
• Hypno-Pants (nemesis of Boring Man, wears hypnotic trousers) (Season 6)
• Murray (stuttering child who loves balloons, Then pops them once he gets them. He is a loose spoof of the sportscaster, Harry Caray (Season 6)
• Rhineheart the Dancing Monkey Boy (video clip used during "technical difficulties") (Seasons 5 & 6)
• Moby Braun (Toby Braun's little brother) (Season 6)
• Nigel Forrester (Aussie nature expert, spoof on Steve Irwin and Nigel Thornberry) (Season 6)
• Ricardo (conceited ladies' man; at one point dated Latanya and almost married Helga Schlumpkenfist) (Season 6)
• Dr. Maybe (enemy of Jimmy Bond, spoof of Dr. No) (season 5)
• Jingo (A co-pilot of Tublent Airlines) (Season 6)

Gabriel Iglesias (season 6)

• Benji Martin (Ricky Martin's Brother)
• Bill Clinton (spoof of the then-president)
• Mr. Nice-Guy (enemy of Jimmy Bond, a villain who used politeness to conquer the world)
• Gomer
• Pizza Guy
• Chester (Baby who discusses topics with sister Lulu)
• Captain MaLurcus (The captain of Turblent Airlines)

Tricia Dickson (season 3)

• Swinestein (a Piganoid and enemy of the USS Spaceship crew)

Victor-Cohn Lopez (Season 4)

• Ricky Ricardo (spoof of the I Love Lucy character)

Zack McLemore (season 4)

• Mr. Trevell (Wackjob Dullmont Music Teacher, Miss Fingerly has a crush on him)
• Velcro (A felt-made alien with a customizable face and removable hands, enemy of the USS Spaceship crew)

Second run (seasons 7–10)

Chelsea Brummet (seasons 7–10)

• Polly Baboon (overly-nice "American Idiot" judge, spoof of Paula Abdul) (Season 9)
• Bridgett (boy-crazy host of televised slumber parties in her room) (Seasons 7–9)
• Sharon Osbourne (spoof of the television personality) (Season 8)
• Brittney (generic spoof of Britney Spears)(Season 7)
• Lil' Embryo's Mama (mother and manager of an embryonic rapper) (Season 9)
• Abby Rhodes (a ditzy teenage girl, named for the Beatles' album, and usually ends her sentences with "Okay".) (Season 9–10)
• Avril Lavigne (spoof of the singer) (Season 8)
• "Tea & Crumpets" lady (refined and uptight antithesis to the Sugar & Coffee hosts) (Season 9)
• Hick Sister 1 (Nashville-style singer, spoof of Wynonna Judd)(Seasons 7 & 8)
• Spella (witch from reality-show spoof "The Unreal World") (Season 8–9)
• Jessiquat Zortog (alien, owns Earth restaurant that serves soylent meat) (Season 10)
• Mega Butt (member of the "LAMOS" crime-fighting team, superhero who can make her butt bigger by inflating it) (Season 10)

Jack DeSena (seasons 7–10)

• Simon Vowel (overly-cruel "American Idiot" judge, spoof of Simon Cowell) (Season 9)
• Rowdy Fan #1 (rabid fan of whatever's happening in the scene, friend of #2)
• Percy Flavin (dorky boy with a whiny voice, sometimes hosts a cooking show with the Buford Rougeneck, possible spoof of Jerry Lewis) (Season 7–10)
• Ozzy Osbourne (spoof of the singer) (Season 8)
• Clem Rougeneck (uneducated head of the Rougeneck clan and unaware that his mother is dead) (Season 9–10)
• Randy Quench (insane volunteer fireman who overreacts to anything involving heat)(Season 8–10)
• Brad Dashman (philandering conceited football player, boyfriend of Heather)(Season 9–10)
• Carson Daly (spoof of the Total Request Live host)(Season 7, 9)
• Vlad (vampire from "The Unreal World") (Season 8–9)
• Papa Zortog (alien, owns Earth restaurant that serves soylent meat) (Season 10)
• Dr. Michael Fist (evil villain with a giant fist, fights the "LAMOS") (Season 10)

Lisa Foiles (seasons 7–10)

• Claudia (dark, gothic friend of Bridgett, has magical powers, also reads morbid poetry to small children) (Season 7–10)
• Herheiney (friend of Harry Bladder, spoof of Hermione Granger) (Season 7 & 8)
• Mama Rougeneck (Co-head of the Rougeneck clan) (Season 9–10)
• Kelly Osbourne (spoof of Ozzy and Sharon's daughter) (Season 8)
• Heather Darling (philandering conceited cheerleader, girlfriend to Brad) (Season 9–10)
• Spirit (ghost of a cheerleader from "The Unreal World") (Season 8–9)
• Vocabulary Girl (Lisa teaches the audience new words, while a ventriloquist dummy uses the words to mock her)(Season 7–9)
• Venice Hyatt (airhead socialite, spoof of Paris Hilton) (Season 8–9)
• Kaffy (over-caffeinated co-host of "Sugar & Coffee") (Season 7–10)
• Hick Sister 2 (Nashville-style singer, spoof of Dolly Parton) (Seasons 7 & 8)
• Lactose Intolerance-Definer (reprised Katrina & Amanda's role when Kenan guest-starred in season 7)
• Marlee (co-hosts "Trashin' Fashion", loosely references Joan Rivers)(Season 8–9)
• Elaine Fist (wife of Dr. Fist)(Season 10)
• Supermodel (a villain who can turn supermodels into mannequins, appeared in an un-aired "LAMOS" sketch) (Season 10)

Kyle Sullivan (seasons 7–10)

• Ryan Beefrest (essentially useless host of "American Idiot", spoof of Ryan Seacrest) (Season 9)
• Harry Bladder (spoof of Harry Potter) (Season 7–8)
• Jack Osbourne (spoof of Ozzy and Sharon's son) (Season 8)
• Ernie (young intern operator of the "Tilt-A-Hurl" ride) (Season 7, 9)
• Vance Laffoon (host of "Sneaky Camera")
• Max (enthusiastic children's show host, outfit suggests spoof of Steve Burns)
• Elliot (Bridgett's standard-issue annoying little brother) (Season 7–9)
• Gabe (accountant from "The Unreal World" who does not know he is a werewolf and fears all of his co-inhabitants) (Season 8–9)
• Dr. Laser (superhero with Class II laser pointer fingers, member of "LAMOS") (Season 10)
• Buzz (over-sugared co-host of "Sugar & Coffee") (Season 7–10)
• Rougeneck Introducer (well-to-do boy in classy surroundings who introduces each Rougeneck skit) (Season 9)
• Claude Grimes (An Australian cooking-show host, parody of Jamie Oliver) (Season 10)

Shane Lyons (seasons 7–9)

• Bucketman (powerful radioactive superhero with a bucket stuck over his head) (Season 8)
• Rowdy Fan #2 (rabid fan of whatever happens in the sketch, friend of #1) (Season 8–9)
• Buford Rougeneck (unintelligent son of the Rougeneck family, also Percy's cooking show host) (Season 7, 9)
• Murray (clumsy roofer)
• Frank (spoof of Frankenstein's monster from "The Unreal World") (Season 8–9)
• Cupid (mascot of "2-Gether 4-ever" starring Brad & Heather) (Season 9)
• Saco (brash parody of Draco Malfoy)
• Soupdude (superhero who makes delicious soup dishes to stop criminals) (Season 7)
• Himself (Shane fights a variety of things, always losing, also in "Advice from the Old Lady in Shane's Mouth") (Season 7–9)

Giovonnie Samuels (seasons 7–9)

• Mandy Snackson ("American Idiot" judge who constantly says "You did your thing, dog", spoof of Randy Jackson) (Season 9)
• Stacy Chit (host of "Chit Chat", where she frequently become bored with her guests) (Season 7–9)
• Gail (naive & sunny participant in Bridgett's slumber parties) (Season 7–9)
• Ms Fishtail (driving instructor who intentionally distracts her students while they drive) (Season 9)
• Pharah (sassy Egyptian mummy from "The Unreal World") (Season 8–9)
• Zit-Connector (Draws simple pictures using back-pimples) (Season 7–8)

Bryan Hearne (seasons 7–8)

• Lil' Fetus (rapper who has yet to be born, spoof of Bow Wow, Lil' Romeo & others) (Season 7–8)
• Zigfried (foreign-born cabbie who drives terribly and frequently calls people kumquats) (Season 7–8)
• Mr. Flopples (unenthusiastic children's show character, suggested spoof of the title character of Blue's Clues)
• ReRon (precocious best friend of Harry Bladder, spoof of Ron Weasley) (Season 7–8)

Christina Kirkman (seasons 9–10, winner of "R U All That" competition)

• Lil' Embryo (rapper even younger than Lil' Fetus) (Season 9)
• Head (disembodied and disgruntled head of a New Yorker on "The Unreal World") (Season 9)
• Poncy Flavin (Percy's sister) (Season 10)
• Cindy Lou Rougeneck (the baby of the Rougeneck family) (Season 9–10)
• Sunshine Sally (a talking doll that drives children insane at their parents' request) (Season 9)
• Bernice (Bernie Kibbitz's great granddaughter, appeared in the 10th Anniversary show) (Season 10)
• Zsa Zsa Zortog (daughter of Mama & Papa Zortog) (Season 10)
• Squat (Claude's dirty assistant) (Season 10)
• Roxy McDoogle (escaped juvenile convict) (Season 10)
• Jen Rollands (Channel 6½ News reporter)

Jamie Lynn Spears (seasons 8–9)

• Thelma Stump (elderly All That security guard with a love of bacon) (Season 8–9)
• Betty Jo Rougeneck (middle child of the Rougeneck clan) (Season 9)
• Pickles (sadistic elf who torments Mr. Flopples)
• Zoe (barely animate zombie on "The Unreal World") (Season 8–9)
• Carlee (co-hosts "Trashin' Fashion", loosely references Melissa Rivers) (Season 8–9)

Ryan Coleman (seasons 9-10, joined midseason, finalist of "R U All That")

• Ed (reprising Kel Mitchell's role) (Season 9)
• The Sprinkler (half-man/half-sprinkler, member of "LAMOS") (Season 10)
• Jim Tasty (edible grade-school student) (Season 10)
• Rex Firestone (host of "Everything")
• Rodney Quench (Nephew of Randy Quench: Volunteer Fireman) (Season 9)

Kianna Underwood (season 10)

• Kareena Jones (an old, dangerously negligent bus driver, name is a play on the word careen)
• Kyra Stanks (a geeky spoof of Tyra Banks)

Denzel Whitaker (season 10)

• Gwok Zortog (son of Mama & Papa Zortog)
• The Barber (superhero who styles hair, member of "LAMOS")
• Cupid 2 (new mascot of "2gether 4ever")
• Jeff Bester (safety tester who deems products unsafe by using them abusively)
• Harry Snuffer (old boyfriend of Kareena Jones)
• Ben Rollands (Channel 6½ News reporter)

Lil' JJ (season 10)

• Vital Information anchor (reprising sketch once done by Denberg and Tamberelli)

Extras and guest stars

Dan Schneider (seasons 1–10)

• Mr. Bailey (manager of Good Burger after season 1)
• "Ask Ashley" Announcer (weird voice that leads into & out of "Ask Ashley" skits)
• Old Lady in Shane's Mouth (see name)
• "Know Your Stars" Announcer (reprising Brian Peck's role) (Seasons 9-10)
• Royal Guard (Green Room Sketch, making Katrina Queen of England)
• Life with Peter and Flem Announcer
• Oswald (voice only) (Season 7–9)

Kevin Kopelow (seasons 1–6)

• Kevin the stage manager (tells the cast when they have 5 minutes to air, then is abused by the cast)
• "Seymour Reacts to Stuff" Announcer

Soup (seasons 1–6)

• Announcer

Brian Peck (seasons 7–10)

• Pickle Boy (a mute man who shares his love of pickles with all)
• "Know Your Stars" Announcer (an unseen voice that mocks cast members and guest stars)

Tim Goodwin (seasons 1–3)

• Manager of Good Burger (Unnamed manager of Good Burger during season 1. Later replaced by Dan Schneider)
• Mr. Grover Maroon (season 3) (father of Lump, Emily, and Chuck Maroon, always wears a bra on his shirt)
• Usually plays a dad.
• Dr. Migraine (Ishboo's psychiatrist)
• Ghost of John Rogan (deceased manager of Good Burger)

Kristian Truelsen (season 2)

• Dentist (appears on Cooking with Randy & Mandy when Randy gets a toothache)
• Father of Ishboo's American family

Jeremy Rowley (seasons 7–8)

• Professor Chafe (mean teacher of Harry Bladder, spoof of Severus Snape)
• "Tilt-A-Hurl" Operator (very messy man, due to his job)
• "Rate the Pain" Victim (man who receives an injury, then rates it from 1 to 10)

Bonnie Helman

• Miss Bubbell

Britney Spears (various episodes throughout the series)

• Herself

Drake Bell

• Himself (musical guest thrice in last two seasons, also guest-starred in reunion special)
• "Totally Kyle" Rostensan (recurring character from The Amanda Show, used multiple times in season 9)

Miranda Cosgrove

• Herself (guest-starred in the reunion special and appeared as an audience member in the first episode of season 10 during musical guest Mario's performance)

Stephanie Matto (a finalist of "R U All That")

• Mrs. Rorsh (a sadistic grief counselor, appeared only in season 9)

Frankie Muniz

• Himself (guest-starred in season 7 premiere and hosted reunion special)

Josh Peck

• Himself (guest-starred in reunion special)
  • Contrary to popular myth, Peck was never a member of the All That cast, and in fact only appeared on the show twice, including the 10th Anniversary Reunion Special.

Chris Farley

• Chef Farley (appeared as a guest on Cooking with Randy)

Unknown

• Fat Cheerleader (woman who just screams, season 9)
• Mee-Ma Rougeneck (deceased mother of Papa Rougeneck, seasons 9-10)
• Lil' Fetus's mother (fetal rapper's mom/manager, seasons 7-8)
• "Connect the Zits" canvas (man with back acne who is drawn upon by Giovannie, seasons 7-8)
• Old Man (a man who is old, member of "LAMOS", season 10)
• Hillbilly Jug Band (A hillbilly band with midgets, season 9)
• The Toddler (a baby who toddles, member of "LAMOS", season 10)
• Maude (Kyle's elderly girlfriend, season 10)

Prop characters

• The Big Ear of Corn - see name, seasons 1–6, 10
• Fuzz (performed by Kevin Carlson) - an annoying puppet, seasons 4–6
• Dead Spice - a guitar-playing skeleton, seasons 5–6
• Oswald (voiced by Dan Schneider) - an obnoxious ventriloquist dummy, season 7–9
• Action League Now! - action figures, sometime during season 1
• Mr. Artichoke Head - inanimate doll owned by Kareena Jones, season 10