List of Ben 10 characters

This is a list of characters in the universe of Cartoon Network's Ben 10 franchise.

Main characters

Ben Tennyson

Main article: Ben Tennyson

Voiced by:

  • Tara Strong – Ben 10 (2005), Ben 10: Secret of the Omnitrix, Ben 10: Ultimate Alien (as 10 years old in "Forge Of Creation"), Ben 10: Omniverse (11 years old), and Ben 10 (2016) and various commercials, shorts and video games
  • Yuri Lowenthal – Ben 10: Alien Force, Ben 10: Ultimate Alien, Ben 10: Omniverse and Ben 10 (2016) (as an elderly Ben in "The 11th Alien: Part 1" and as the teenage Bens in "Alien X-Tinction"), various commercials and video games

Portrayed by:

Benjamin Kirby "Ben" Tennyson (alias "Ben 10") is the main protagonist of the franchise and wielder of the Omnitrix, a powerful watch-like device allowing him to turn into many different aliens. He is the cousin of Gwen Tennyson and best friend of Kevin Levin.

Gwen Tennyson

Main article: Gwen Tennyson

Voiced by:

  • Meagan Smith – Ben 10 (2005)
  • Ashley Johnson – Ben 10: Alien Force, Ben 10: Ultimate Alien, and Ben 10: Omniverse
  • Montserrat Hernandez – Ben 10 (2016)

Portrayed by:

Gwendolyn "Gwen" Tennyson is Ben's paternal cousin and Kevin's love interest, a skilled sorceress who inherited her magical "spark" from her Anodite grandmother, Verdona.

Max Tennyson

Voiced by:

  • Paul Eiding – Ben 10 (2005), Ben 10: Alien Force, Ben 10: Ultimate Alien, and Ben 10: Omniverse
  • Adam Wylie – Ben 10 (as a kid in "Don't Drink the Water")
  • Jason Marsden – Ben 10: Ultimate Alien (as a young adult in "Moonstruck")
  • David Kaye – Ben 10 (2016)

Portrayed by:

Maxwell "Max" Tennyson is a retired Plumber and the paternal grandfather of Ben and Gwen.

Kevin Levin

Voiced by:

  • Michael Reisz – Ben 10 (2005) (in the episode "Kevin 11")
  • Charlie Schlatter – Ben 10 (2005) (in later episodes)
  • Greg Cipes – Ben 10: Alien Force, Ben 10: Ultimate Alien, Ben 10: Omniverse, and Ben 10 (2016)

Portrayed by:

Kevin Ethan Levin is an Osmosian, a mutant subspecies of human, who first appeared as one of Ben's enemies. However, he later reformed and is now his friend and Gwen's love interest.

Rook Blonko

Voiced by Bumper Robinson

Rook Blonko is a Revonnahgander Plumber from the planet Revonnah, who serves as Ben's partner throughout Omniverse after Gwen and Kevin leave the team. He has advanced combat knowledge and wields the multi-purpose Proto-Tool.

Omnitrix/Ultimatrix Aliens

Four Arms

Voiced by:


Four Arms is a Tetramand, a red four-armed humanoid from the desert-like planet Khoros. His main ability is superhuman strength.

Heatblast

Voiced by:


Heatblast is a Pyronite, a plasma-based humanoid from the planet-like star Pyros. He is a fire-based entity with the main ability of pyrokinesis. He is also known to be Ben's first alien transformation after he attained the Omnitrix at 10 years old.

XLR8

Voiced by:


XLR8 (pronounced "accelerate") is a Kineceleran, a blue-black velociraptor-like humanoid from the stormy planet Kinet. His main ability is superhuman speed, capable of manipulating his friction and reaching speeds of up to 500 mph. He is Ben's fastest alien transformation on foot.

Wildmutt

Voiced by:

Wildmutt is a Vulpimancer, a large orange dog-like creature without eyes from the planet Vulpin. His main ability is his enhanced senses, which act as a form of vision, much like a thermograph. He is additionally incapable of speech, though this is not the case in his Ultimate form.

Diamondhead

Voiced by:

Diamondhead is a Petrosapien, a silicon-based crystal humanoid from the planet Petropia. His main ability is crystallokinesis (control over crystal).

In the classic continuity, Diamondhead's species share the same planet with the Crystalsapiens (Chromastone's species).

Ghostfreak

Voiced by:

Ghostfreak is a Ectonurite, a ghost-like alien from the planet Anur Phaetos in the Anur System. He has many abilities, the most common being intangibility and possession. He is one of Ben's least favorite aliens since his DNA was sampled from the villain Zs'Skayr, who was at one point sealed in the Omnitrix before escaping. Like a normal ghost, he prefers the dark, being weak against very bright light.

Grey Matter

Voiced by:

Grey Matter is a Galvan, a small gray frog-like alien from the planet Galvan Prime. His main ability is his very high intelligence, which enables him to work with any type of technology, solve very complex problems, and build complex machinery from little spare parts. He is Ben's smartest alien transformation as he is the only alien form except Azmuth who truly knows about the Omnitrix's inner workings.

Upgrade

Voiced by:

Upgrade is a Galvanic Mechamorph, a techno-organic, blob-like humanoid from Galvan Prime's moon Galvan B. His main ability is technological possession. His species was created accidentally by Azmuth during a Helix experiment on the moon.

In the reboot series, Ben eventually lost Upgrade after using him to upgrade the Omnitrix and defeat Vilgax. Subsequently, the remaining part of his DNA fused with Ben's own and became a separate entity, Glitch.

Stinkfly

Voiced by:

Stinkfly is a Lepidopterran, an insectoid alien from the planet Lepidopterra. His main abilities are flight and slime generation. In the reboot, Stinkfly has a heavily altered appearance, resembling a humanoid blue dragonfly.

Wildvine

Voiced by:

Wildvine is a Florauna, a plant-like humanoid from the planet Flora Verdance. His main ability is plant manipulation, as well as having pods on his back which he can use as explosives or smoke bombs.

Supporting characters

Professor Paradox

Voiced by: David McCallum

Professor Paradox is a character who debuts in Alien Force and later appears in Ultimate Alien and Omniverse. Following a lab accident, he was displaced from space and time for millennia, eventually gaining complete understanding and control over it. Unable to remember his original name, he took the moniker "Professor Paradox".

Azmuth

Voiced by:

Azmuth, also known as the "First Thinker", is a Galvan scientist and creator of the Omnitrix as well as the sword Ascalon. He is a recurring ally to Ben, in spite of being asocial and apathetic. He is considered by many (including Professor Paradox & Max Tennyson) to be the smartest in the universe but according to him he is actually the smartest in three galaxies, arguably five; and 2nd smartest in 11 galaxies.

Antagonists

Vilgax

Voiced by:

• Steve Blum - Ben 10 (2005) and Ben 10: Omniverse

• James Remar - Ben 10: Alien Force and Ben 10: Ultimate Alien

• Yuri Lowenthal - Ben 10 (2016)

Vilgax is a Chimera Sui Generis warlord from the planet Vilgaxia, and the archenemy of Ben. His main goal is to obtain the Omnitrix to rule the universe using an army of droids equipped with its transformation abilities. He is additionally served by an army of robot henchmen and the alien Psyphon.

In the reboot continuity, Vilgax is Azmuth's former assistant, who stole the Omnitrix from him and used it for universal conquest. However, Azmuth managed to drain half of Vilgax's DNA and put it into the Omnitrix, leaving him powerless until he recovered his full power from Ben years later.

Charmcaster

Voiced by:

• Kari Wahlgren - Ben 10 (2005), Ben 10: Alien Force, Ben 10: Ultimate Alien, Ben 10: Omniverse

• Tara Strong - Ben 10 (2016)

Charmcaster, real name Hope, is a sorceress from the magical dimension of Ledgerdomain who was raised by her uncle, Hex, after her father Spellbinder was killed by the villain Addwaitya. Though primarily an antagonist, she has occasionally taken on a more neutral or anti-heroic role.

In the reboot continuity, Charmcaster is a normal human, named Heather, whose magic is derived from one of Hex's spellbooks.

Hex

Voiced by:

Hex is Charmcaster's uncle, whom she has a strained relationship with, though they do genuinely care for each other. Initially introduced as a villain, he later reformed offscreen and became a teacher at Friedkin University as of Omniverse.

In the reboot continuity, Hex is at least 10,000 years old, having regularly restored his youth and powers using special pools of light. Additionally, he is not from another dimension and is a normal human.