Western cartoons typically don't run as long as most other series, but they can still help make or boost a voice actor's career.
A No Recent Examples rule applies to this trope. To avoid any knee-jerk reactions, examples shouldn't be added until six months after the work's released or the character first appears (whichever is later).
- Chris Niosi (coupled with Mob Psycho 100) in OK K.O.! Let's Be Heroes.
- Kevin Conroy, Loren Lester, Arleen Sorkin, Richard Moll, Efrem Zimbalist Jr., Mark Hamill and David Warner (the latter four as voice actors) in Batman: The Animated Series.
- Keith David, Thom Adcox, Ed Asner, Tom Wilson and Michael Dorn (coupled with I Am Weasel) (the latter three as voice actors) in Gargoyles.
- Elizabeth Daily, Kath Soucie, Cheryl Chase, David Doyle and others in Rugrats.
- Maurice LaMarche in Popeye and Son, Pinky and the Brain and The Real Ghostbusters
- John DiMaggio and Katey Sagal (as a voice actor) in Futurama.
- Christine Cavanaugh in Rugrats, Darkwing Duck and Dexter's Laboratory.
- Cam Clarke, Barry Gordon and Townsend Coleman (tied with The Tick) in Teenage Mutant Ninja Turtles (1987).
- Rob Paulsen (tied with the above Ninja Turtles cartoon) and Jess Harnell in Animaniacs.
- Dan Castellaneta, Julie Kavner, Nancy Cartwright, Yeardley Smith, Harry Shearer, and Hank Azaria in The Simpsons.
- Frank Welker (coupled with The Transformers and Inspector Gadget) and Casey Kasem in Scooby-Doo, Where Are You!.
- Peter Cullen, Gregg Berger, Chris Latta, Corey Burton and Paul Eiding in The Transformers.
- June Foray in Rocky and Bullwinkle.
- Jim Cummings in Chip 'n Dale: Rescue Rangers, Darkwing Duck, and The New Adventures of Winnie the Pooh.
- Grey DeLisle in either What's New, Scooby-Doo?, The Fairly OddParents!, The Grim Adventures of Billy & Mandy, Danny Phantom or Avatar: The Last Airbender.
- Ventriloquist Paul Winchell (tied with the Winnie the Pooh shorts) in Wacky Races.
- Radio announcer Gary Owens in Space Ghost and Dino Boy.
- Also, George Lowe for Space Ghost Coast to Coast.
- Billy West in The Ren & Stimpy Show, Futurama and Doug.
- Tim Daly, Dana Delany, Clancy Brown, Brad Garrett and Michael Ironside in Superman: The Animated Series.
- George Newbern, Susan Eisenberg, Michael Rosenbaum (coupled with Smallville), Maria Canals Barrera, Carl Lumbly, Scott Rummell, Oded Fehr, Olivia d'Abo, Robert Englund and Phil Morris (the latter four as voice actors) in Justice League.
- Kin Shriner, C.C.H. Pounder, Jeffrey Combs, J. K. Simmons, Gina Torres, Nathan Fillion and James Remar (the latter five as voice actors) in Justice League Unlimited.
- Brian Bloom, Eric Loomis, Rick D. Wasserman, Chris Cox and James Mathis III in The Avengers: Earth's Mightiest Heroes
- Don Adams (voice-acting wise) and Cree Summer in Inspector Gadget.
- Will Friedle in Batman Beyond.
- Charlie Adler in either Jem, My Little Pony 'n Friends (the original 1980s series), or Tiny Toon Adventures.
- Tress MacNeille in Tiny Toon Adventures, Animaniacs and Chip 'n Dale: Rescue Rangers.
- Joe Alaskey in Tiny Toon Adventures, The Sylvester and Tweety Mysteries or Duck Dodgers.
- Richard Steven Horvitz (tied with The Angry Beavers and The Grim Adventures of Billy & Mandy) in Invader Zim.
- Lacey Chabert and Tim Curry (both as voice actors) in The Wild Thornberrys.
- Tom Kenny (tied with Rocko's Modern Life), Rodger Bumpass, Carolyn Lawrence, Doug Lawrence, Jill Talley, and Bill Fagerbakke (coupled with Gargoyles and a live-action role in Coach) in Spongebob Squarepants.
- Zach Tyler Eisen, Mae Whitman, Jack DeSena, Dante Basco, Jessie Flower, and James Garrett in Avatar: The Last Airbender
- Tara Strong in The Powerpuff Girls (1998), The New Batman Adventures, and The Fairly OddParents!.
- Tom Kane in The Wild Thornberrys and The Powerpuff Girls (1998).
- Pamela Adlon and Stephen Root in King of the Hill.
- April Winchell and the late Dana Hill in Goof Troop.
- Jeff Bennett in Johnny Bravo.
- Patty Maloney (as a voice actress) and Scott Menville in The Little Rascals.
- Scott Menville, Hynden Walch, Khary Payton, Greg Cipes, Ashley Johnson (tied with Recess in voice acting) and Ron Perlman (tied with Batman: TAS in voice acting) in Teen Titans.
- Josh Keaton in The Spectacular Spider-Man.
- Matthew Mercer (coupled with Fire Emblem: Awakening) and Emmanuelle Chriqui (as a voice actress) in Thunder Cats 2011. Sure, people on the 'net knew who Matt was before he started playing Tygra, but that was his big breakout.
- Larry Kenney and Lynne Lipton in the original Thunder Cats.
- Matt Lanter, Ashley Eckstein, Catherine Taber, Nika Futterman (coupled with My Gym Partner's a Monkey), Anna Graves and Stephen Stanton in Star Wars: The Clone Wars.
- Taylor Gray and Tiya Sircar in Star Wars Rebels.
- Phil LaMarr (tied with Justice League) and Mako Iwamatsu (as a voice actor) in Samurai Jack.
- H. Jon Benjamin in Home Movies.
- Dana Snyder, Carey Means and Dave Willis in Aqua Teen Hunger Force
- Jason Marsden in A Goofy Movie, Static Shock and The Lion King II: Simba's Pride.
- Patrick Warburton in The Venture Brothers, Buzz Lightyear of Star Command and Family Guy.
- Matt Hill, Samuel Vincent, Tony Sampson, Kathleen Barr, Janyse Jaud, and Erin Fitzgerald in Ed, Edd n Eddy.
- Janet Varney, PJ Byrne, David Faustino, Seychelle Gabriel and Zelda Williams (voice acting-wise for the latter three) in The Legend of Korra.
- Francesca Marie Smith in Hey Arnold!.
- Jason Spisak (coupled with Green Lantern: TAS), Stephanie Lemelin, Danica McKellar (as a voice actress), and Eric Lopez in Young Justice (2010). Granted, people knew who Jason was before he became Kid Flash and Razer, but those two roles are what made him more well-known.
- Daran Norris and Susan Blakeslee for The Fairly Oddparents.
- Michael Sinterniklaas (coupled with The Venture Brothers), Greg Abbey, and Sam Riegel for Teenage Mutant Ninja Turtles (2003).
- Andrea Libman, Ashleigh Ball, Tabitha St. Germain, Cathy Weseluck, Nicole Oliver, Michelle Creber, Madeleine Peters, and Claire Corlett for My Little Pony: Friendship Is Magic.
- Sumalee Montano, James Horan, Andy Pessoa, Tania Gunadi, and Peter Mensah (as a voice actor, tied with Dead Space) in Transformers: Prime.
- Seth MacFarlane, Seth Green, Mike Henry, Alex Borstein, and Mila Kunis (the last two as voice actors) in Family Guy.
- Scott Grimes (as a voice actor), Rachael MacFarlane (tied with The Grim Adventures of Billy & Mandy), Jeff Fischer, and Wendy Schaal in American Dad!.
- Ben Diskin and Lauren Tom (tied with Batman Beyond and Futurama) in Codename: Kids Next Door.
- Kevin Thoms in Sym-Bionic Titan.
- Diedrich Bader and Paul Reubens (as voice actors) in Batman: The Brave and the Bold.
- David Kaufman in Danny Phantom.
- Christopher Daniel Barnes and Jennifer Hale in Spider-Man: The Animated Series.
- Gary Chalk and David Kaye in Beast Wars.
- Bumper Robinson in Transformers: Animated.
- Mel Blanc in Looney Tunes. His role as Barney Rubble in The Flintstones also counts as this in regards to his television work.
- Jeremy Shada and Niki Yang in Adventure Time.
- James Sie, Sab Shimono and James Hong (voice-acting) in Jackie Chan Adventures.
- Carlos Alazraqui in Rocko's Modern Life.
- Janice Kawaye in My Life as a Teenage Robot.
- Eric Bauza in G.I. Joe: Resolute.
- Udo Kier and Matthew Lillard (as a voice actor) in Scooby-Doo! Mystery Incorporated.
- Mindy Cohn in What's New, Scooby-Doo?.
- Bob Bergen in Duck Dodgers. (Not the first time he voiced Porky, but the first time he played him as a main character)
- Likewise with Jeff Bergman as Bugs/Daffy in The Looney Tunes Show.
- Hoon Lee and Christian Lanz in Teenage Mutant Ninja Turtles (2012).
- Vincent Martella, Thomas Sangster, Dan Povenmire, Alyson Stoner, Kelly Hu (both as voice actresses) and Olivia Olsen (coupled with Adventure Time) in Phineas and Ferb.
- Daryl Sabara and Freddy Rodriguez (as voice actors) in Generator Rex.
- Anthony Ruivivar (as a voice actor, also tied with Third Watch) in Beware the Batman.
- Jessica DiCicco in The Buzz on Maggie and Adventure Time.
- The late Lorenzo Music in Garfield and Friends and The Real Ghostbusters.
- Danny Cooksey and Susan Silo in Xiaolin Showdown.
- Regina King, John Witherspoon and Gary Anthony Willains in The Boondocks.
- Jason Ritter (as a voice actor), Alex Hirsch, and Kristen Schaal (coupled with Bob's Burgers) in Gravity Falls.
- Lenore Zann and Cal Dodd in X-Men: The Animated Series.
- J.G. Quintel and Sam Marin in Regular Show.
- Andrew Kishino in G.I. Joe: Renegades.
- Danny Jacobs and James Patrick Stuart in The Penguins of Madagascar.
- Mick Wingert in Kung Fu Panda: Legends of Awesomeness.
- Sean Marquette and Keith Ferguson in Foster's Home for Imaginary Friends.
- Vyvan Pham in Ben 10: Alien Force.
- Scott Wolf (as a voice actor) and David Sobolov (tied with Beast Wars, Transformers: Prime, and Guardians of the Galaxy (2015)) in Kaijudo: Rise of the Duel Masters.
- Greg Eagles and Vanessa Marshall in The Grim Adventures of Billy & Mandy
- Imari Williams, Parvesh Cheena and Shannon McKain in Transformers: Rescue Bots.
- Neil Patrick Harris (voice-acting wise; coupled with Capitol Critters) in Spider-Man: The New Animated Series.
- Thurop Van Orman, Brian Doyle-Murray, and Roz Ryan (as voice actors) in The Marvelous Misadventures Of Flap Jack.
- Sophie Oda in Amethyst, Princess of Gemworld. Before this, her best known role was arguably Cody's on-off love interest Barbara in 'The Suite Life of Zack & Cody''.
- Christy Carlson Romano (tied with Even Stevens) and Nicole Sullivan in Kim Possible.
- Zach Callison, Estelle (voice-acting wise), Erica Lutrell (coupled with Voltron: Legendary Defender), Michaela Dietz (coupled with Barney & Friends) and DeeDee Magno in Steven Universe.
- Logan Grove and Kweski Boakye in The Amazing World of Gumball.
- Alan Young in DuckTales (1987).
- Molly Quinn in Nickelodeon's dub of Winx Club.
- Michael Bell (tied with Speed Buggy and Rugrats) and B. J. Ward (tied with Jana of the Jungle) in G.I. Joe: A Real American Hero.
- Alyson Court in Beetlejuice and/or X-Men: The Animated Series.
- Leigh-Allyn Baker and Kelly Osbourne (voice acting wise for both) in The 7D.
- Julie McWhirter in Jeannie.
- Don Messick in The Ruff & Reddy Show.
- John Stephenson and Jean Vander Pyl in The Flintstones.
- Janet Waldo in The Jetsons.
- Eddie Deezen (as a voice actor), Kat Cressida, and Candi Milo in Dexter's Laboratory.
- Mitchell Whitfield, Constance Zimmer and Darren Criss in Transformers: Robots in Disguise.
- Salli Saffioti, America Young, and Audu Paden in Monster High
- Jonquil Goode in Ever After High.
- Jonathan Katz, Laura Silverman, and H. Jon Benjamin in Dr. Katz, Professional Therapist.
- Judy Greer, Aisha Tyler, Chris Parnell, Amber Nash, Lucky Yates, and Adam Reed (the first three as voice actors) in Archer.
- John Roberts, Eugene Mirman and Dan Mintz in Bob's Burgers.
- Tracy Grandstaff and Wendy Hoopes in Daria.
- Steven Yeun, Bex Taylor-Klaus, Tyler Labine, Rhys Darby, Kimiko Glenn and Jamie Gray Hyder (voice acting wise) in Voltron: Legendary Defender.
- Eden Sher (voice acting wise) and Adam MacArthur in Star vs. the Forces of Evil.
- Ben Schwartz in Randy Cunningham: 9th Grade Ninja
- Aimee Carrero, Marcus Schribner, Karen Fukuhara, Jordan Fisher, AJ Michalka, Lauren Ash, Keston John and Jacob Tobia (voice acting wise) in She-Ra and the Princesses of Power
- Holly Gauthier-Frankel in Sagwa, the Chinese Siamese Cat.
- Basically half the child cast of Arthur, notably Cameron Ansell and Mark Rendall, both being previous voices for the titular character.
- Tyrone Savage (coupled with Total Drama: Revenge Of The Island), Richard Binsley (coupled with The ZhuZhus), and Amos Crawley (coupled with Little Bear) in Redwall.
- Len Carlson in The Raccoons.
- Kristin Fairlie and Tracy Ryan in Little Bear.
- Amanda Leighton, Kristen Li and Natalie Palamides (voice-acting wise) in The Powerpuff Girls (2016).
- Andrew Sabiston in Super Mario World.
- Steve Little in Camp Lazlo.
- Maria Bamford in CatDog.
- Melissa Disney in As Told by Ginger.
- Armin Shimerman (as a voice actor) in Evil Con Carne.
Mexican Voice Actors (dubbing only)
- Ariadna Rivas in Codename: Kids Next Door as Numbuh 5, along with Gadget and Ruri Hoshino in the film.
- The late Hiromi Hayakawa in Monster High as Draculaura.
- The also late Esteban Siller as Gargamel.
- Victor Trujillo in ThunderCats as Lion-o, along with Brozo and in less degree, John Blackthorne/Anjin-san.
- Christine Byrd in Hey Arnold! as Helga Pataki, along with Sakura Haruno.
- The late Rubén Moya in He-Man and the Masters of the Universe as the titular He-Man, along with voicing Jack Palance in Ripley's Believe It or Not!.
- Rommy Mendoza in the same show as Teela, along with Flone Robinson in The Swiss Family Robinson: Flone of the Mysterious Island, Beehoney in Kissyfur, Kelly Kapowski in Saved by the Bell and Ahri in League of Legends.
- Carla Castañeda and Melissa Gedeón in My Little Pony: Friendship Is Magic as Twilight Sparkle and Pinkie Pie (along with D.Va) respectively.
- Jesus Guzman as El Chavo del ocho in the animated series.
- The late César Arias (as a voice actor) and also late Herman López as Professor X (and also Albus Dumbledore, Donatello and Capt. Jean-Luc Picard) and Logan/Wolverine in X-Men: The Animated Series (along with Bad Bird, Shredder and Cassius).
- Alberto Bernal in We Bare Bears as Nom Nom, plus Spider-Man and Hitohito Tadano.
- Rafael Rivera in The Critic as Jay Sherman.
- Cecilia Guerrero in Onyx Equinox as Izel, along with Puko.
- Humberto Vélez in The Simpsons as Homer Simpson.
- Scarlet Miuller as the titular Bluey, plus Hanako Kamado.
Chilean Voice Actors (dubbing only)
- Rene Pinochet and Pablo Ausensi in Avatar: The Last Airbender as Aang and Prince Zuko, respectively.
- Sandro Larenas in Garfield and Friends as Garfield.
Polish voice actors (dubbing only)
- Dariusz Toczek in ¡Mucha Lucha! as Rikochet.
- Anna Sztejner in The Fairly OddParents! as Timmy Turner (being one of her first main dubbing roles after she moved from Gdańsk to Warsaw in 2001).
- Mateusz Sacharzewski, Weronika Nockowska, Adam Serowaniec and Mateusz Rusin in Rated "A" for Awesome as Les, Thera, Lars and Noam, respectively.
- Pecola, Totally Spies! and Wunschpunsch are this for their almost entire voice casts, as they were among the first dubs to be done in Katowice.
- Basically all of the voice actors for Eckhart, it was one of the first dubs done in Wrocław.
Russian Voice Actors (dubbing only)
- Olga Zverova in My Life as a Teenage Robot as Jenny Wakeman, alongside Avatar: The Last Airbender as Katara and Azula.
- Olga Shorokhova in the same show as Aang, Toph and Ty Lee.
- Nikita Prozorovsky in Scooby-Doo as Shaggy.
- Darya Frolova in Dexter's Laboratory as Dee Dee.
European French Voice Actors (both dubbing and original acting)
- Philippe Peythieu, Véronique Augereau, Joëlle Guigui, and Aurélia Bruno in The Simpsons as Homer, Marge, Bart, and Lisa Simpson.
- Thierry Wermuth and Christian Pélissier in The Adventures of Tintin (1991) as Tintin (along with Stan Marsh in South Park) and Captain Haddock.
- Christophe Lemoine, William Coryn, and Marie-Laure Beneston in South Park as Eric Cartman and Butters, Kyle Broflovski and Kenny McCormick, and Wendy Testaburger and almost every other female character.
- Sébastien Desjours in SpongeBob SquarePants as the title character.
- Guy Piérauld as Bugs Bunny. The latter is also the Star-Making Role for Piérauld’s successor, Gérard Surugue.
- Alexis Tomassian as Phillip J. Fry in Futurama (along with Martin Mystery).
- Adrien Antoine in The Batman as Batman/Bruce Wayne, who then went on to voice almost every animated and gaming incarnation of the Dark Knight since then... and Superman in live-action films, somehow.
- Sylvain Caruso as the voice of Donald Duck since 1989 and Laurent Pasquier as the voice of Mickey Mouse since 1999.
- Philippe Allard, Robert Dubois, and Alexandra Correa in X-Men: Evolution as Cyclops, Wolverine, and Rogue.
- Claudio Dos Santos in The Avengers: Earth's Mightiest Heroes as Hulk/Bruce Banner.
Canadian French Voice Actors (dubbing only)
- Hubert Gagnon, Béatrice Picard (as a voice actress), Johanne Léveillé, and Lisette Dufour in The Simpsons as Homer, Marge, Bart, and Lisa Simpson.
Japanese voice actors (dubbing only)
- Keisuke Chiba in Rick and Morty as Morty Smith.
- Mitsuru Ogata and Anne-Sophie Lennerfors (aka LiLiCo) in South Park as Kenny McCormick and Eric Cartman respectively.
- Yuka Takakura in The Lion Guard as Kion, along with Tota Konoe.
- Chie Kojiro and the late Miyuki Ichijo in The Simpsons as Lisa (plus Anna-Marie Bourget) and Marge Simpson (plus Jodie Starling) respectively.
- Momoko Taneichi in Disenchantment as Princess Bean, along with both Santa and Gwess.
- Manami Hanawa as the titular Bluey, plus Kiyui.
Salvadoran Spanish voice actors (dubbing only)
- Basically, the entire cast of Brickleberry, as this was one of the first dubs done in El Salvador.
- Sebastián Meléndez and Kevin Molina in Invincible as Mark Grayson/Invincible and Nolan Grayson/Omni-Man respectively.
U.S. Spanish-speaking voice actors (Miami)
- Patricia Azan in South Park as Eric Cartman.
- Arianna López in The Fairly OddParents! as Timmy Turner.
U.S. Spanish-speaking voice actors (Los Angeles)
- Edgar Wald and Alejandro Abdalah in The Transformers as Optimus Prime and Megatron respectively.
Argentinian Spanish voice actors (dubbing only)
- Alejandro Graue in Gravity Falls as Dipper Pines, along with Keita Amano/Nate Addams.
Venezuelan Spanish voice actors (dubbing only)
- Tiny Toon Adventures is this for the entire voice cast, and very especially for the voice acting industry of Venezuela.
- Frank Carreño and Orlando Noguera in Animaniacs as Pinky and the Brain (plus Superman and All Might) respectively.
- Rubén Leon in Batman: The Animated Series as the Joker.
- Both Kaihiamal Martínez and Luis Carreño as the titular character of SpongeBob SquarePants.
Brazilian Portuguese voice actors (dubbing only)
- Rick and Morty is this for most of its voice cast, and very especially for the dubbing industry of Campinas.