This is a list of characters in the universe of the Cartoon Network's Ben 10 franchise.
Overview
Television series
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.
= Main cast = Recurring cast = Guest cast
Film series
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.
Main characters
Ben Tennyson
Voiced by:
Tara Strong – Ben 10 (2005), Ben 10: Ultimate Alien, Ben 10: Omniverse & Ben 10 (2016) (child) Yuri Lowenthal – Ben 10: Alien Force, Ben 10: Ultimate Alien, Ben 10: Omniverse & Ben 10 (2016) (teenager) Portrayed by:
Graham Phillips – Ben 10: Race Against Time Ryan Kelley – Ben 10: Alien Swarm Ben Tennyson is the titular character and the main protagonist of the franchise. At the start of Ben 10, he is a 10-year-old boy from Bellwood who, during his summer vacation, discovers the Omnitrix, a prototype device that attaches to his wrist and allows him to transform into various aliens. He uses the prototype Omnitrix to become a hero while traveling across the USA. After the prototype Omnitrix is self-destroyed at the end of Alien Force, Ben retrieves the Ultimatrix from Albedo and uses it as a replacement. At the end of Ultimate Alien, Azmuth takes the Ultimatrix away to destroy and gives Ben the official version of the Omnitrix.
Gwen Tennyson
Voiced by:
Meagan Smith – Ben 10 (2005) Ashley Johnson – Ben 10: Alien Force, Ben 10: Ultimate Alien, & Ben 10: Omniverse Montserrat Hernandez – Ben 10 (2016) Portrayed by:
Haley Ramm – Ben 10: Race Against Time Galadriel Stineman – Ben 10: Alien Swarm Gwen Tennyson is Ben's paternal cousin. In the original series, Gwen shared a love-hate family relationship with Ben. Before discovering and reinventing her dormant magic powers, she helped Ben using her innate intelligence; she is also a talented martial artist who has received black belts in karate and taekwondo. Gwen is a model student, and in Omniverse, she is shown leaving for an Ivy League college. Gwen is able to manipulate mystical energy named "mana" to create energy blasts, shields, and other constructs. She later learns that her powers are not magic in origin, but rather alien, and her paternal grandmother, Verdona, is a powerful Anodite alien who can manipulate mana, the essence of magic and life. Gwen later learns to take on a fully Anodite form at will.
Max Tennyson Voiced by:
Paul Eiding – Ben 10 (2005), Ben 10: Alien Force, Ben 10: Ultimate Alien & Ben 10: Omniverse (adult) Adam Wylie – Ben 10 (2005) (child) Jason Marsden – Ben 10: Ultimate Alien (teenager) David Kaye – Ben 10 (2016) Portrayed by:
Lee Majors – Ben 10: Race Against Time Barry Corbin – Ben 10: Alien Swarm Max Tennyson is Ben and Gwen's paternal grandfather. He is 60 years old in the original series, 65 in Alien Force and the reboot, 66 in Ultimate Alien and Omniverse, 80 in Ben 10,000 and 92 in Ken 10. Despite his age, he is shown to be an experienced capable fighter, and after Ben finds the Omnitrix, supports him any way he can. Max was once a candidate for the Apollo 11 mission and one of the leaders, or "Magisters", of the Plumber organization, but Ben and Gwen did not know of this at first, believing him to have been a literal plumber.
Kevin Levin Kevin Levin (voiced by Michael Reisz in the original series episode "Kevin 11", Charlie Schlatter in later episodes of the original series, and Greg Cipes in subsequent series; portrayed by Nathan Keyes in Alien Swarm) is initially depicted as an Osmosian with the ability to absorb matter, energy, and DNA and initially appears in the original series as an 11-year-old boy and one of Ben's enemies. Believing his stepfather Harvey Hackett convinced his mother to abandon him after he accidentally destroyed his family's house when his powers first manifested, Kevin ran away and ended up living in the subway of New York City, where he met Ben and used him to siphon the Omnitrix's energies to get back at those who demonized him. However, Kevin was also infused with the DNA of the aliens Ben had access to at the time and became a chimeric hybrid of the alien forms, which rendered him psychotic and unstable. Kevin managed to return to his original form after being trapped in the Null Void. In Omniverse, it is revealed that Kevin is actually a human and derived his powers from a genetic mutation. In the reboot, Kevin is a human who wields the Antitrix, a version of the Omnitrix that allows him to transform into modified versions of Ben's aliens.
Rook Blonko Rook Blonko (voiced by Bumper Robinson) is a Revonnahgander Plumber who Max assigns to work with Ben after Gwen and Kevin leave Bellwood for college. He is a top Plumber Academy graduate and skilled fighter who wields the Proto-tool, a shapeshifting weapon that can transform into various tools.
Alternate versions of Ben
Ben 23 Ben 23 (voiced by Tara Strong) is an alternate universe Ben from Dimension 23 debuting in "Store 23". This version is a celebrity, using the Omnitrix to become famous, and lacking the morals of Ben Prime due to the death of his universe's Max. Ben begins to change his ways after meeting the prime universe Ben.
Ben 10,000
Ben 10,000 (voiced by Fred Tatasciore in the original series and reboot, Sean Donnellan in Ultimate Alien, Judd Nelson in Omniverse) is the future version of Ben. Ben's depiction changes between series; the original version of the character is named for his expanded roster, consisting of 10,000 aliens.
Secondary characters
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