Ben 10: Ultimate Alien All Episodes (BEST 2024)
Ben 10: Ultimate Alien is the third installment in the massive Ben 10 franchise, picking up just weeks after the events of Ben 10: Alien Force. Running from 2010 to 2012, this series saw Ben Tennyson evolve from a secret teen hero into a global superstar, armed with the powerful Ultimatrix. The series consists of 52 episodes spanning three seasons. Season 1: The Aggregor and Ultimate Kevin Saga
The first season (Episodes 1–20) focuses on two major shifts: Ben’s secret identity being leaked to the public by young fan Jimmy Jones, and the arrival of the Osmosian villain Aggregor.
Key Plot: Aggregor kidnaps five powerful aliens from the Andromeda Galaxy to absorb their powers and reach the "Forge of Creation" to obtain the Ultimate Prize.
The Turning Point: To stop a fully powered Aggregor, Kevin Levin makes the ultimate sacrifice, absorbing the Ultimatrix's energy. This saves the universe but drives him insane, turning him into Ultimate Kevin and forcing Ben to consider a lethal solution to stop his best friend. Season 2: New Allies and Galactic Threats
Season 2 (Episodes 21–32) shifts into a more episodic format, expanding the lore of the Ben 10 universe.
Notable Episodes: This season introduces Eunice, a "living Omnitrix" who absorbed Gwen's DNA, and sees the return of Ben 10,000.
Legacy Characters: Fans see the return of Elena Validus from the Alien Swarm movie and the introduction of Gwen’s cousin, Sunny. Season 3: The Dagon and Vilgax Finale
The final season (Episodes 33–52) brings back Ben's greatest nemesis for a reality-shattering finale.
Ben 10: Ultimate Alien consists of 52 episodes aired between 2010 and 2012. While production divided these into different blocks, they are most commonly grouped into three seasons. Season 1 (20 Episodes) This season focuses on the Aggregor Arc
, where the Osmosian villain kidnaps five aliens from the Andromeda Galaxy to steal their powers.
Ben 10: Ultimate Alien (TV Series 2010–2012) - Episode list
Ben 10: Ultimate Alien consists of 52 episodes (and one crossover special) originally aired between 2010 and 2012. Set one year after Alien Force, the series follows a 16-year-old Ben Tennyson whose secret identity has been revealed to the world while he masters the new Ultimatrix, which allows his alien forms to evolve into more powerful "Ultimate" versions. Series Overview
The series is typically categorized into three main production seasons, though broadcasting orders sometimes varied. Season 1: 20 episodes Season 2: 12 episodes Season 3: 20 episodes
Ben 10: Ultimate Alien consists of 52 episodes aired across three seasons between 2010 and 2012. The series follows 16-year-old Ben Tennyson as he uses the Ultimatrix
, a device that allows his alien forms to evolve into more powerful "Ultimate" versions. Ben 10 Wiki Season 1 (20 Episodes) ben 10: ultimate alien all episodes
This season focuses on Ben's life after his secret identity is revealed to the world and his battle against the intergalactic criminal, Ben 10 Wiki
: Ben's secret identity is leaked online by a young fan named Jimmy Jones. Escape From Aggregor
: Five aliens from another galaxy try to escape their captor, Aggregor. Ultimate Aggregor
: Aggregor successfully absorbs the powers of five aliens, becoming nearly unstoppable. The Forge of Creation
: Ben, Gwen, and Kevin travel to the birthplace of Celestialsapiens to stop Aggregor. Absolute Power (Parts 1 & 2)
: Kevin absorbs the Ultimatrix's power to defeat Aggregor but goes insane, leading to a final showdown with Ben. Ben 10 Wiki Season 2 (12 Episodes)
The second season features standalone adventures and deeper explorations of the series' lore, including Ben's first meeting with his future self. The Transmogrification of Eunice
: The team finds a mysterious pod containing a girl named Eunice, who has a connection to the Omnitrix. Ben 10,000 Returns : Ben joins forces with his future self to stop Eon. Prisoner Number 775 is Missing
: An invisible alien escapee from Area 51 seeks revenge on those who imprisoned him. Season 3 (20 Episodes) Ben 10: Ultimate Alien Episodes | Ben 10 Wiki | Fandom
Ben 10: Ultimate Alien marks a high-stakes era for the franchise, transitioning from the secrecy of Alien Force to a world where Ben Tennyson is a global celebrity. Over its 52 episodes, the series explores the power of the Ultimatrix, a device that allows Ben to "evolve" his aliens into more powerful forms. The Aggregor & Map of Infinity Arc (Episodes 1–20) The first 20 episodes focus on the Osmosian villain
, who kidnaps five powerful aliens from the Andromeda Galaxy to absorb their powers. Ben 10: Ultimate Alien (season 1) - Wikiquote
Phase II: The Power & Consequences Arc (Episodes 21–30)
- Premise: Dealing with the fallout of Kevin’s insanity and the introduction of the "Esoterica" cult.
- Highlights:
- Ben is forced to hunt down and seemingly "cure" Kevin, testing the bonds of the team.
- The introduction of Sir George and the "Flame Keepers' Circle."
- Ben struggles with the morality of using lethal force against Kevin.
Review: Ben 10: Ultimate Alien – The End of an Era
Ben 10: Ultimate Alien (2010–2012) is the direct sequel to Ben 10: Alien Force and the third installment in the Man of Action trilogy. Arriving on the heels of Alien Force, which successfully matured the franchise, Ultimate Alien had the difficult task of raising the stakes without losing the charm of its predecessor. While it is often overshadowed by the darker tone of Alien Force or the radical changes of Omniverse, Ultimate Alien stands as a solid, action-packed conclusion to Ben Tennyson’s teenage years.
Character Dynamics
- Ben Tennyson: This is arguably the most competent version of Ben. He is confident, strategic, and embraces his role as a leader. However, the writers occasionally regress him into arrogance for comedic effect, which can be jarring compared to his humbler moments in Alien Force.
- Gwen Tennyson: Gwen continues to shine as the moral compass and magical powerhouse. Her relationship with Kevin provides much of the show’s emotional grounding.
- Kevin Levin: Kevin undergoes significant trauma in this series. His arc—from ally to villain and back to redemption—is handled
Here’s a complete review of Ben 10: Ultimate Alien (all episodes), covering its strengths, weaknesses, key arcs, and where it stands in the broader Ben 10 franchise.
How to Watch
- Physical Media: Complete series DVD box sets are available (Region 1).
- Digital: Available for purchase on Amazon Prime Video, Apple iTunes, and Google Play.
- Streaming: Occasionally available on Max (HBO Max) depending on your region. Check local listings.
Ben 10: Ultimate Alien follows 16-year-old Ben Tennyson as he navigates a world where his secret identity has been revealed, all while mastering the Ultimatrix, a device that allows his alien forms to "evolve" into more powerful versions. The series consists of 52 episodes originally aired between 2010 and 2012, primarily divided into two major story arcs: the Aggregor/Andromeda saga and the Dagon/Forever Knights war. Season 1: The Andromeda and Aggregor Arc Ben 10: Ultimate Alien is the third installment
The first 20 episodes focus on the Osmosian villain Aggregor, who kidnaps five powerful aliens from the Andromeda Galaxy to absorb their powers and reach the "Ultimate Prize". Fame Ben's identity is revealed to the world. Duped
Ben uses the Ultimatrix to split into three to handle multiple responsibilities. The Andromeda 5
Ben meets the five refugees (Bivalvan, Galapagus, P'andor, Andreas, and Ra'ad) and fails to stop Aggregor from capturing them. The Map of Infinity
Ben and the team race Aggregor across the cosmos to secure pieces of a map leading to the Forge of Creation. Absolute Power
Kevin absorbs the Ultimatrix's energy to stop Aggregor, but goes insane, forcing Ben and Gwen to find a way to save him. Season 2 & 3: The Dagon and Forever Knights War
The latter half of the series (often grouped into seasons 2 and 3) shifts focus to the Forever Knights and an ancient, interdimensional entity known as . Ben 10,000 Returns
: Ben meets his future self, who helps him unlock even more powerful transformations.
: The Forever Knights begin a crusade to rid the Earth of all alien life.
The Flame Keepers' Circle: A mysterious cult worships Dagon, who they believe will bring a new age to Earth; they are revealed to be led by Vilgax. The Ultimate Sacrifice
: The sentient "Ultimate" forms inside the Ultimatrix rebel, forcing Ben to face them in a psychic showdown.
The Ultimate Enemy (Parts 1 & 2): The series finale where Vilgax absorbs Dagon's power, and Ben must use the sword Ascalon to defeat him and decide the fate of the universe. Ben 10: Ultimate Alien Episodes
Ben 10: Ultimate Alien is the third iteration of the popular Cartoon Network franchise, serving as a direct sequel to Ben 10: Alien Force . The series consists of 52 episodes
and one crossover special. It follows a sixteen-year-old Ben Tennyson as he masters the Ultimatrix
, a device that allows his aliens to hyper-evolve into powerful "Ultimate" forms. Series Overview Phase II: The Power & Consequences Arc (Episodes 21–30)
The show is divided into three production seasons, though airing orders vary by platform. Episode Count Primary Story Arc 20 Episodes The hunt for Aggregor and the "Ultimate Kevin" arc. 12 Episodes
Transition to more self-contained stories and the rise of Sir George. 20 Episodes The Dagon invasion and the final battle with Vilgax. Key Arcs and Themes Ben 10: Ultimate Alien Episodes
To watch Ben 10: Ultimate Alien , the series features 52 episodes across three seasons. It is the third installment in the main Ben 10 franchise, following the events of Alien Force and preceding Omniverse. Series Overview
The show ran from April 23, 2010, to March 31, 2012, following a 16-year-old Ben Tennyson after his secret identity is revealed to the world. It introduces the Ultimatrix, a device that allows Ben to transform his aliens into evolved "Ultimate" forms. Episode List by Season
Season 1 (20 Episodes): Follows the Aggregor and Map of Infinity arcs, where Ben must stop an Osmosian villain from absorbing the powers of five aliens from the Andromeda Galaxy.
Season 2 (12 Episodes): Focuses on Ben's growing fame, the return of classic villains like Dr. Animo, and the preparation for the Daigon arc.
Season 3 (20 Episodes): Concludes the Daigon and Vilgax arc, culminating in the final battle for the universe in the series finale, "The Ultimate Enemy." How to Watch
You can find all episodes through the following official platforms:
Max (formerly HBO Max): This is the primary streaming home for all Ben 10 series in the U.S.
Hulu: Episodes are often available via a live TV subscription or specific regional licensing.
YouTube/Google Play: Individual episodes or full seasons are available for digital purchase.
Amazon Prime Video: Available for purchase on the Ben 10: Ultimate Alien Storefront.
For fans looking for newer content, a rebooted Ben 10 comic series is scheduled to launch in 2026.
Season 2: The Diagon Arc and Cosmic Horror (Episodes 21–32)
Season 2 (often labeled as Season 1B or 2A in streaming) moves from Aggregor to the ancient, Lovecraftian threat of Diagon and his servant, the fire-breathing dragon Dagon. Ben also faces his ultimate nemesis: Vilgax, empowered by Dagon.
4. "Night of the Living Nightmare" (Season 3, Ep 44)
A bottle episode. Ben is trapped in a nightmare loop where every decision leads to his friends dying. It is psychological horror for a kids' show and a masterclass in low-budget tension.