Ben 10: Ultimate Alien: Season 1
2010 · 20 episodes · ★ 8.6
What Season 1 of Ben 10: Ultimate Alien
A few weeks after defeating Vilgax, Ben Tennyson is sixteen and trying to master the Ultimatrix, an upgraded version of the Omnitrix that lets him transform into far more powerful aliens. His secret life goes public when Jimmy Jones, a conspiracy theory enthusiast, figures out who he is and a compilation video spreads around the world. Young people idolize him, but adults, led by TV host Will Harangue, see him as a threat. Ben must live with fame while the Forever Knights and other enemies keep coming after him.
Season 1 Episodes
1x01 Fame
Ben's secret is out. As Ben deals with his newfound fame, a new threat emerges as a thief steals parts of a new advanced spaceship from NASA.
Directing: Dan Riba · Writing: Dwayne McDuffie · Starring: Scott Menville, John DiMaggio, Vyvan Pham
1x02 Duped
Ben is supposed to attend a tournament to support his girlfriend, but the Forever Knights are trying to break into a museum. Ben tries to use the Ultimatrix to handle all his obligations.
Directing: Butch Lukic · Writing: Len Uhley · Starring: Jim Piddock, John DiMaggio, Vyvan Pham
1x03 Hit 'Em Where They Live
After Jimmy Jones reveals Ben's identity, some of his enemies (such as Zombozo, Rojo, Charmcaster, Vulkanus, and Sevenseven) team up to try to attack his family. Now Ben and his friends have to protect them no matter what.
Directed by Matt Youngberg · Written by Len Wein · Starring Beth Littleford, Paul Eiding, Kari Wahlgren, John DiMaggio
1x04 Video Games
Ben gets an offer to star in his own video game, but the designer's real motives are part of a plan to destroy Ben.
Directing: Dan Riba · Writing: Joe Casey, Joe Kelly · Starring: Peter MacNicol, John DiMaggio
1x05 Escape from Aggregor
The team encounters another alien who escaped from Aggregor and, through him, learns more about Aggregor's goals.
Directing: Butch Lukic · Writing: Charlotte Fullerton, Joe Casey, Joe Kelly · Starring: J.K. Simmons, Dwight Schultz, John DiMaggio
1x06 Too Hot to Handle
P'Andor, escaped from Aggregor, now wants help to escape his encapsulating suit, but Kevin's the first to perceive that that's a fatally bad idea.
Directing: Matt Youngberg · Writing: Marty Isenberg, Joe Casey, Joe Kelly · Starring: Fred Tatasciore, John DiMaggio
1x07 Andreas' Fault
Then team encounters another of Aggregor's escaped prisoners, Andreas, whom Argit is using as part of a scheme against the Forever Knights.
Directing: Dan Riba · Writing: Ernie Altbacker, Joe Casey, Joe Kelly · Starring: Scott Menville, Greg Ellis, Alexander Polinsky, John DiMaggio
1x08 Fused
Ra'ad, the last of Aggregor's escaped prisoners, attacks Ben and informs the team of the true fate of his comrades. He finds a safe hiding place but one that endangers Ben in the process.
Directing: Dan Riba · Writing: Len Uhley, Duncan Rouleau, Joe Casey · Starring: John DiMaggio
1x09 Hero Time
Ben meets his hero, Captain Nemesis, who's become jealous of all the attention Ben attracts.
Directed by Matt Youngberg · Written by Steven Barnes, Joe Casey, Joe Kelly · Starring Nicholas Guest, Christopher McDonald, Tara Platt, John DiMaggio
1x10 Ultimate Aggregor
Aggregor has all five aliens. The Plumbers manage to disable Aggregor's ship, forcing Aggregor to find a new way to absorb their powers. The team makes a last ditch effort to save the alien prisoners.
Directing: Matt Youngberg · Writing: Joe Casey, Joe Kelly, Matt Youngberg · Starring: Paul Eiding, David McCallum, John DiMaggio
1x11 Map of Infinity
Aggregor has absorbed all the powers of his captured aliens. Now he's after the Map of Infinity.
Directing: Matt Youngberg · Writing: Joe Casey, Joe Kelly · Starring: Jeff Bennett, Paul Eiding, John DiMaggio
1x12 Reflected Glory
Cash and JT convince the team to allow them to take credit for the team's actions so they can earn money for Cash's mother's operation.
Directing: Matt Youngberg · Writing: Peter David, Joe Casey, Joe Kelly · Starring: Peter MacNicol, Matt Levin, Scott Menville
1x13 Deep
Aggregor is after the next piece of the map on a watery planet.
Directing: Dan Riba · Writing: Marty Isenberg, Joe Casey, Joe Kelly · Starring: Kevin Michael Richardson, John DiMaggio
1x14 Where the Magic Happens
Aggregor escapes to a magical dimension. Gwen asks for Charmcaster's help to pursue him. The team learns about Charmcaster's past and why she's willing to help them now.
Directing: Butch Lukic · Writing: Joe Casey, Joe Kelly · Starring: Kari Wahlgren, John DiMaggio
1x15 Perplexhahedron
With the fourth piece of the Map of Infinity almost in Aggregor's clutches, the gang chase him through the artificial planetoid known as Perplexahedron.
Directed by Matt Youngberg · Written by Joe Casey, Joe Kelly · Starring Jeff Bennett, John DiMaggio
1x16 The Forge of Creation
As the team makes its final attempt to stop Aggregor, they find an unexpected ally, and one person will make a fateful decision with lasting repercussions.
Directed by Dan Riba · Written by Joe Casey, Joe Kelly · Starring Jeff Bennett, Tara Strong, David McCallum, John DiMaggio
1x17 Nor Iron Bars a Cage
Kevin's out for payback on anyone who has ever crossed him. His next stop is a prison in the Null Void. Ben and Gwen try to stop him, where Ben comes to a grim decision.
Directing: Butch Lukic · Writing: Joe Casey, Joe Kelly · Starring: Xander Berkeley, Fred Tatasciore, Kevin Michael Richardson
1x18 The Enemy of My Enemy
Argit asks Ben and Gwen for protection from Kevin, so they take him to the nearest Plumbers Academy, but that won't stop Kevin.
Directing: Matt Youngberg · Writing: Len Uhley, Joe Casey, Duncan Rouleau · Starring: Rob Paulsen, Alexander Polinsky, John DiMaggio, Jeff Bennett
1x19 Absolute Power (1)
Kevin starts going after Plumbers kids to gain more power. Ben and Gwen continue to argue about how to handle the situation. Gwen tries to find someone who will help her cure Kevin.
Directing: Dan Riba · Writing: Charlotte Fullerton, Joe Casey, Joe Kelly · Starring: Paul Eiding, Wil Wheaton, Zeno Robinson, John DiMaggio
1x20 Absolute Power (2) Season Finale
Final confrontation with Kevin. While Gwen makes a last ditch effort to save Kevin, Ben fights an all out battle with Kevin.
Directed by Dan Riba · Written by Joe Casey, Joe Kelly · Starring Chris Pratt, Paul Eiding, Wil Wheaton, Zeno Robinson
Season 1 Cast
Yuri LowenthalBen Tennyson (voice)20 episodes
Greg CipesKevin Levin (voice)20 episodes
Paul EidingMax Tennyson / Guard #1 / Guard #2 (voice)5 episodes
Vyvan PhamJulie Yamamoto / Computer Voice (voice)4 episodes
Peter MacNicolOliver / Forever Knight #1 (voice)2 episodes
Kevin Michael RichardsonKwarrel (voice)2 episodes
David McCallumProfessor Paradox (voice)2 episodes
Alexander PolinskyArgit (voice)2 episodes
Kari WahlgrenCharmcaster (voice)2 episodes
Wil WheatonMike Morningstar / Darkstar (voice)2 episodes
Zeno RobinsonAlan Albright / Heatblast (voice)2 episodes
Greg EllisDagonet / Reporter Chet Rigby (voice)Episode 1
Nicholas GuestSimons / Worker / Guest (voice)Episode 1
Matt LevinCash (voice)Episode 1
Where to Watch Season 1 of Ben 10: Ultimate Alien
It is currently not available on the major streaming platforms.
Frequently Asked Questions
How many episodes does season 1 of Ben 10: Ultimate Alien have?
Season 1 of Ben 10: Ultimate Alien has 20 episodes.
When Did Ben 10: Ultimate Alien Season 1 Premiere?
It premiered on April 23, 2010.
Where to Watch Ben 10: Ultimate Alien Season 1?
Currently not available on the major subscription platforms (availability may vary by country).
What is the best episode of Season 1?
According to the TMDB audience score, episode 1x01, "Fame", with a 7.0.