Ben 10: Aliens Unleashed is the fan-created fourth incarnation of Cartoon Network's Ben 10 franchise created by "Man of Action" (a group consisting of Duncan Rouleau, Joe Casey, Joe Kelly, and Steven T. Seagle).
When an old enemy unleashes Ben Tennyson's alien transformations upon the universe in an attempt to destroy it, the hero faces his most dangerous adversary yet: himself.
Armed with the powerful new Alien Assault Vehicles, as well as some new transformations, Ben travels to the Andromeda galaxy with Kevin and Gwen to face a new threat.
- Main article: List of Ben 10: Aliens Unleashed Episodes
Ben 10: Aliens Unleashed features 50 episodes, which span over two seasons.
- Ben Tennyson
- Gwen Tennyson
- Kevin Levin
- Max Tennyson
- Professor Paradox
- Julie Yamamoto
The true Omnitrix
- Main article: List of Ben 10: Aliens Unleashed Aliens
Principal voice actors
- Yuri Lowenthal - Ben Tennyson, Albedo, Alien X
- Ashley Johnson - Gwen Tennyson
- Greg Cipes - Kevin Levin
- Dee Bradley Baker - Humungousaur, Jetray, Chromastone, Spidermonkey, Echo Echo, Big Chill, Upchuck, Cannonbolt, Lodestar, Swampfire, Armodrillo, Goop, Nanomech, Way Big, Brainstorm, Water Hazard, Terraspin, AmpFibian, Heatblast, NRG, Diamondhead, Wildmutt, Eatle, Fasttrack, ChamAlien, Clockwork, Jury Rigg, Four Arms, Stinkfly
- John DiMaggio - Rath, Diagon
- Paul Eiding - Max Tennyson
- Vyvan Pham - Julie Yamamoto
- Tara Strong - Young Ben Tennyson, Serena (Alien X)
- Sean Donnellan - Ben 10,000
- Jeff Bennett - Azmuth, Bellicus (Alien X), Ghostfreak
- David McCallum - Professor Paradox
- Juliet Landau - Verdona Tennyson
- Main article: Ben 10 Aliens Unleashed: Andromeda Attack
Like Ben 10, Ben 10: Alien Force, and Ben 10: Ultimate Alien before it, Ben 10: Aliens Unleashed received at least one video game adaptation; the first was Ben 10 Aliens Unleashed: Andromeda Attack. Featuring more playable characters and aliens than ever before, the game takes place in the Andromeda galaxy in a timeline parallel to that of Ben 10: Aliens Unleashed. The game focuses on the utilization of Ben's new alien forms, as well as the powerful Alien Assault Vehicles.
- Main article: Punch Time Explosion: Ben 10 Takeover
A second Ben 10-related video game was released in connection to Ben 10: Aliens Unleashed: Punch Time Explosion: Ben 10 Takeover. A spin-off of Cartoon Network: Punch Time Explosion, the game features a cast of playable characters from Ben 10, Ben 10: Alien Force, Ben 10: Ultimate Alien, and Ben 10: Aliens Unleashed. These characters range from several of the protagonists from the Ben 10 franchise, to various antagonists, to all of Ben's alien forms.
- It was revealed by series-creator Omega Omnitrix that the series' title was chosen to reference two things: First, over the course of the series, Ben "unleashes" his true potential as a hero and wielder of the Omnitrix. Second, in the series' first season, the main antagonists are Ben's aliens themselves, who are "unleashed" from the Omnitrix and proceed to wreak havoc across the universe.