List of actors and actresses who appeared in Ben 10 related media.
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Television
Ben 10 (2005)
Appeared in Ben 10 (2005-2008):
- Dee Bradley Baker: Wildmutt/Stinkfly/Acid Breath/Robotic Lieutenant/Cash/Carl Tennyson/Boy Student #4/DJ/Porcupine/Immovable Object/Eye Guy/Joel/Camille's Ex-boyfriend/Justice of the Peace/Stinkfly/Wildpup/Mr. Zu/Eskimo Teen #2/Doggy Buddy/Kitty Litterer/Grandpa Elsgood/Thief #2/Ugly Server/Mall Cop #1/Mall Official/Spitter/Teen/Stink Arms/Tuba Player Magician/Security Guard/Robber #2/SACT Guy #1/Interpreter Alien/Computer #1/Vulpamancer #1/Joe/Thug/Officer/Robot Lieutenant/EMT #1/Punk #1/Trapped Worker/Gang #1/Cop #2/Kid #1/Huge Limax/Bad Guy #1/Parrot/Security Guard #1
- Swampfire/Humungousaur/Jet Ray/Big Chill/Spidermonkey/Echo Echo/Goop/ChromoStone/Brainstorm/Lodestar/DNAlien #1/Cannonbolt/Way Big/Psyphon/Upchuck/Ultimate Humongousaur/Driver/Ultimate Swampfire/Sugilite/Tiffin/Zaw-Veenull/Commander Sangfroid/Amalgamation Robot/Moley/Mr. Smoothy/Another Man/Jetray/Highbreed Bailiff/Last Alien/Decka/Pyroxovore #1/Ssserpent/Policeman #1/Human/Hideous Monster/Alien Mom/HighBreed/various in Alien Force
- Steve Blum: Headblast/Vilgax/Ghostfreak/Tour Guide/Radio Announcer/Ben's Teacher/Mr. Mann/Baby Four Arms/Smaller Headblast/Eskimo Teen #1/Announcer/Steve/Band Member #2/Handy Buddy/Narrator/SWAT Cop/Volunteer #1/Heat Jaws/Man #1/Security Guard/Robber #1/Vulpamancer #2/Bob/Barker/Bystander/Bad Guy #2/Store Manager/Roger
- Clancy Brown: Kenko
- Larry Cedar: Lead Scientist - Howell
- Rosalind Chao: Councilwoman Liang
- John DiMaggio: Baron Highway/Vulkanus
- Rath/Vulkanus/Octagon Vreedle/Ragnarok/Computer voice/Judge Domstol/Worker in Alien Force
- Michael Dorn: Vicktor/Benvicktor/Dr. Vicktor
- Plumber in Omniverse
- Jeff Doucette: Thumbskull
- Robin Atkin Downes: Jonah Melville
- Sir Cyrus/Night Nurse/Various in Ultimate Alien
- Grey Griffin: Camille Mann/Headblast Gwen/Mrs. Mann/Xylene
- Nicholas Guest: Clancy
- Guest/Simons/Worker in Ultimate Alien
- Jennifer Hale: Rojo/Tour Guide/Turbine/Gilbert/Mandy/Joey (Rojo)/Boy/Teacher/Jamie
- Tom Kane: Ultimos/Arcticguana/Donovan GrandSmith
- Josh Keaton: Hector/Kid/Tim Dean
- Mikey Kelley: Gang #2/Attendant/Helicopter Pilot
- Nancy Linari: Automated Voice/Reporter/Screaming Woman/Tour Guide
- Vanessa Marshall: Diamondhead Gwen/Female Cannonbolt/Four Arms Gwen/Policewoman/Tini
- Richard McGonagle: Four Arms/President/Exo-Skull/Gladiator #1/Driver/Radio News Announcer/Cop #1/Dr. Kelly
- Nolan North: Henchman/Teen Attendant
- Robert Patrick: Phil/Rookie
- Rob Paulsen: Ditto/Monitor/Promoter
- Rhomboid Vreedle/Baz-El/Cotton Candy Vendor/Patrolman in Alien Force
- Bruce/Clown #5/Coach Keene in (2016) Ben 10
- Khary Payton: Hex/Automated Voice/Convict #1/Teen #1/Driver/Foreman/Forever Knight #1/Punk #3
- Manny/Hex/TV Announcer in Alien Force
- Hex in Ultimate Alien
- Student in Omniverse
- Robert Picardo: Leader Alien
- Principal White in Race Against Time
- Neil Ross: Guard #2/Radio Chatter #1/Wainwright
- Armin Shimerman: Slix Vigma
- Kath Soucie: Cowgirl/Edwin GrandSmith/Joan Maplewood/Little Boy/Teen #2/Tiffany
- Tara Strong: Ben Tennyson/Upgrade/Gwendolyn Tennyson/Woman/Sandra Tennyson/Ken Tennyson/Buzzshock/Little Kid/Mrs. Fong/Cousin Lucy/Toddler Ben/Cheerleader/Kid/Benwolf/Doll/Female Guard/Volunteer #2/Edith/Computer Voice/Old Lady/Female Thug/Waitress/Elderly Woman/Policewoman/Young Boy
- Princess Attea in Alien Force
- Serena/Young Ben Tennyson in Ultimate Alien
- Cree Summer: Frightwig
- Frightwig in Omniverse
- Fred Tatasciore: Cannonbolt/Ripjaws/Guard #1/Ben 10,000/Way Big/Train Conductor/Security Guard/Convict/Coach Finn/Squire #1/Kappa Statue/Vendor/Thief #1/Tourist/Employee/Fungal Brain/Doomicus/Gladiator #2/Soldier/Computer #2/Alarm/Policeman #1/Thief #2/Krakken/Bad Guy #1
- Jim Ward: XLR8/Diamondhead/Wildvine/Announcer/Security Guard/Soldier/Mr. Beck/Referee/Gordon Tennyson/Radio Announcer/NASA Engineer/Sam/Mall Cop #2/Newscaster/Diamond Matter/Man #2/Commander/Manager/TV News Reporter/Anchor/Security Guard #1/Bad Guy #2/Ranger
- Billy West: Guard/Kraab/Punk #2
- Adam Wylie: JT/Boy Nerdy Kid #4/Young Max Tennyson
- Pierce in Alien Force
- Keone Young: Ishyama
Ben 10: Alien Force
Appeared in Ben 10: Alien Force (2008-2010):
- Pamela Adlon: Kevin's Mom
- Diedrich Bader: Lu/Simian
- Jeff Bennett: Azmuth/Ghostfreak/Magister Labrid/Policeman/Kraab/Security Alien #2/Blue Leader/Red Leader/Ultimo/DNAlien #2/Alien Dad
- Powers Boothe: Sunder
- Clancy Brown: Dragon/Pilot
- Greg Cipes: Kevin Levin/Forever Knight #4/Kid/Kid #1/Happy Alien/DNAlien #5/Rubber Suit Alien/Teenager
- Kevin Conroy: Bellicus/Warrior #2
- Tim Curry: Dr. Joseph Chadwick/Forever Knight #2
- Diane Delano: DNAlien/Edna
- Ma Vreedle/Pretty Boy Vreedle in Ultimate Alien
- Will Friedle: Ken Tennyson/Shem
- Brian George: Alien #3/Mayor Coleman
- Janitor/Victor Valadis in Ultimate Alien
- Ioan Gruffudd: Devin Levin/Robot Guard
- Ashley Johnson: Gwen Tennyson/Alien Girl/Cicely/Mom Alien/Mr. Smoothy Girl/Tennis Player
- Wallace Langham: DNAlien #2/Tyler
- Yuri Lowenthal: Ben Tennyson/Omnitrix/Albedo/Forever Knight #3/Kenko/Captive #1/Radio Announcer/Alien #2/Orb/Patrolman/DNAlien #3/Driver/Brad/Albedo Ben/Truck Driver/JT
- David McCallum: Prof. Paradox
- Scott Menville: JT
- Fanboy/Forever Knight #2/Jimmy/Pilot #2 in Ultimate Alien
- Chrono Spanner/Jimmy Jones/Ken Tennyson in Omniverse
- George Newbern: Frank Tennyson
- Alexander Polinsky: Argit/Jarett
- Forever Knight in ''Ultimate Alien
- Techadon Soldier/Grack in Omniverse
- James Remar: Vilgax/Security Alien #1/Vilgax Goop
- Kevin Michael Richardson: HighBreed Commander/Big Ship/DNAlien #3/Highbreed Commander/Forever Knight #2/TV Narrator/Sir Morton/Forever Knight #1/Beefy Trucker/Emperor Milleous/Warrior #1/Sheriff Mason/Guard
- Kwarrel/Magister Pyke in Ultimate Alien
- J. K. Simmons: Magister Gilhil
- Plumber in Ultimate Alien
- James Arnold Taylor: Attendant #1/Raff
- Announcer/Brannigan/Fake Vilgax/Fridge/Kolar/Plumber Officer in Ultimate Alien
- Kari Wahlgren: Charmcaster
- Suemugnousaur/Viktoria in Omniverse
- Bridie/Mel Malachi/Quinn in (2016) Ben 10
- Wil Wheaton: Darkstar/Mike Morningstar
- Michael York: Patrick
Ben 10: Ultimate Alien
Appeared in Ben 10: Ultimate Alien (2010-2012):
- Xander Berkeley: Trukk/Warden Morgg
- Miguel Ferrer: Alpha #4/Magister Hulka
- Tress MacNeille: Zennith
- Peter MacNicol: Oliver/Forever Knight #1/Mr. Webb
- Jason Marsden: Antonio/Young Max Tennyson
- Christopher McDonald: Capt. Nemesis
- Bill Mumy: Agent Bryson
- Jim Piddock: Chair Umpire/Color Commentator/King Urien
- Chris Pratt: Cooper
- Peter Stormare: King Viktor/King Xarion
- Tia Texada: Elena Validus
Ben 10: Omniverse
Appeared in Ben 10: Omniverse (2012-2014):
- Aziz Ansari: Billy Billions
- René Auberjonois: Azmuth/Galvan Security Officer/Various
- Eric Bauza: Driba/Diamondhead/Dr. Psychobos/Way Big/Upchuck/Grey Matter/Fistrick/Ultimate Albedo/Jerry/Solid Plugg/Thunderpig/Galvan Albedo/Eatle/Buzzshock/Rook Da/Artiguana/Trumbipulor/Ripjaws/Bellicus/Toepick/Magawhatt/Raff/Pax/Chromastone/Mr. Smoothy/Big Chuck/Young Cooper Daniels/Brainfrog/Mad Way Big/Mad Diamondhead/Vomit Man/Parts Dealer/various
- Nanny Nightmare/Security Guard in (2016) Ben 10
- Jeffrey Combs: Kuphulu
- Mark Hamill: Maltraunt/Red Coat
- Judd Nelson: Ben 10,000/Eon/Atomix X
- Corey Burton: Malware/Mr. Baumann/Brainstorm/Seebik/Fiskerton/Kangaroo Kommando/Starbeard/V.V. Argost/various
- Kate Micucci: Luhley
- Bumper Robinson: Rook Blonko/Bloxx/Terraspin/Ball Weevil/Jury Rigg/Corvo/Mad Rook Blonko/Elliot/Alan Albright/Krujo/Future Rook Blonko/UpRigg/various
- Gwendoline Yeo: Nyancy Chan/Sheelane
Ben 10 (2016)
Appeared in Ben 10 (2016) (2016-2021):
- Troy Baker: Lord Decibel
- Drake Bell: Michael Morningstar
- Johnny Yong Bosch: Nate Adams/Noby Nobi
- Keith David: Yawk
- Tom Kenny: Mecha Xingo/Polar Twain
- Vanessa Marshall: Queen Bee/Woman
- Max Mittelman: Overflow/Todd/Various
- Parminder Nagra: Komal
- Daryl Sabara: Headblast/Kid/Agent/Young Rex/Various
- Roger Craig Smith: Diamondhead/Steam Smythe/Forever Knight/Rocky/Announcer/Bill/Omni-Enhanced Diamondhead/Truck Driver/Sgt. Smythe/Various
- Audrey Wasilewski: Maxine/Mom
- Debra Wilson: Maxine
Films
Ben 10: Secret of the Omnitrix
Appeared in Ben 10: Secret of the Omnitrix (2007):
- Robert David Hall: Azmuth
- HighBreed Guard/Counterman/Forever Knight #3 in Alien Force
- Dwight Schultz: Dr. Animo
- Dr. Animo/Null Void Guardian in Alien Force
Ben 10: Race Against Time
Appeared in Ben 10: Race Against Time (2007):
- Beth Littleford: Sandra Tennyson
- Sceles Vreedle in Omniverse
- Lee Majors: Max Tennyson
- Don McManus: Carl Tennyson
- Daran Norris: Diamondhead
- Graham Phillips: Ben Tennyson
- Sab Shimono: Old Man
- Alex Winter: Constantine Jacobs
- Nanomech in Alien Swarm
- Aloma Wright: Mrs. Dalton
Ben 10: Alien Swarm
Appeared in Ben 10: Alien Swarm (2009):
- Barry Corbin: Grandpa Max Tennyson
- Alyssa Diaz: Elena Validus
- Ryan Kelley: Ben Tennyson
- Nathan Keyes: Kevin E. Levin
- Galadriel Stineman: Gwen Tennyson
- Justin Welborn: Psycho #2
