List of Ben 10 characters
- This table shows the recurring characters and the actors who have portrayed them throughout the franchise.
- A dark grey cell indicates the character was not in the series or film, or that the character's presence in the series or film has not yet been announced.
- A Y indicates an appearance as a younger version of a pre-existing character.
- A C indicates a cameo appearance.
- A P indicates an appearance in onscreen photographs only.
- A D indicates an appearance in deleted scenes only.
- A M indicates a motion-capture role.
- A U indicates an uncredited role.
- Tara Strong - Ben 10 (as 4 and 10 years old), Ben 10: Secret of the Omnitrix (as 10 years old), Ben 10: Ultimate Alien (as 10 years old in "Forge Of Creation"), Ben 10: Omniverse (as 5, 10, and 11 years old), and Ben 10 (Reboot; 10 years old and a toddler) and various commercials, shorts and video games
- Yuri Lowenthal - Ben 10: Alien Force (as 15 and 16 years old), Ben 10: Ultimate Alien (as 16 years old), Ben 10: Omniverse (15 and 16 years old) and Ben 10 (Reboot; Elderly), various commercials and video games
- Scott Menville - Ben 10 Acceso Total (as 10 years old in Commercial 1 only)
Keshav Nath - Ben 10:Classic (2005) to Ben 10 Ultimate Alien (2013).
Vijay Sinha - Ben 10 Omniverse (2014) to Ben 10 Reboot (2020).
Raghuvaran - Ben 10:Classic (2005) to Ben 10:Reboot (2016)
Iphie Lubis - Ben 10:Classic (2005), Ben 10:Alien Force (2008), Ben 10:Omniverse (2012) to Ben 10:Reboot (2016)
Benjamin Kirby Tennyson (alias "Ben 10") is the main protagonist of the franchise.
- Meagan Smith - Ben 10 (10 years old)
- Ashley Johnson - Ben 10: Alien Force, Ben 10: Ultimate Alien, and Ben 10: Omniverse (11, 15, and 16 years old)
- Montserrat Hernandez - Ben 10 (Reboot; 10 years old and a toddler)
Gwendolyn Tennyson is Ben's paternal cousin and Max's granddaughter.
- Paul Eiding - Ben 10, Ben 10: Alien Force, Ben 10: Ultimate Alien, and Ben 10: Omniverse (54, 59-60, 60-61, 64-65, and 65–66 years old)
- Adam Wylie - Ben 10 (10 years old in "Don't Drink the Water")
- Jason Marsden - Ben 10: Ultimate Alien (17 years old in "Moonstruck")
- David Kaye - Ben 10 (Reboot)
Maxwell Tennyson is a retired Plumber, the paternal grandfather of Ben, and Gwen.
- Michael Reisz - Ben 10 (11 years old in the episode "Kevin 11")
- Charlie Schlatter - Ben 10 (11 years old in later episodes)
- Greg Cipes - Ben 10: Alien Force, Ben 10: Ultimate Alien, Ben 10: Omniverse, and Ben 10 (Reboot) (11, 12, 16, and 17 years old)
- Nathan Keyes - Ben 10: Alien Swarm
Kevin Ethan Levin is an Osmosian who first appeared as one of Ben's enemies, but reformed as his best friend and Gwen's love interest.
- Bumper Robinson - Ben 10: Omniverse
Rook Blonko is a Revonnahgander from the planet Revonnah. He is a by-the-book Plumber who was assigned to Ben Tennyson by Max after Gwen and Kevin Levin left.
Glitch is a character introduced in the 2016 Reboot episode, "Innervasion", he is a half-human half-galvanic mechamorph being, who was created after Upgrade's DNA Pod was destroyed in "Omni-Tricked: Part 4". During Seasons 3, 4 and the recent film, Ben 10 Versus the Universe: The Movie, He is merged with the Omni-Buggy and his appearance as a car.
- De Boever, Arne (2018-03-06), "Financing the Novel: Ben Lerner's 10:04", Finance Fictions, Fordham University Press, doi:10.5422/fordham/9780823279166.003.0007, ISBN 978-0-8232-7916-6
- "Ben Tennyson (Young) Voices (Ben 10)". Behind The Voice Actors. Retrieved 2020-06-07.
- "Ben 10 Acceso Total Bob the Blob transformation commercial English (LOST)".