Ben 10: Ultimate Alien All Episodes //top\\ [2025]

Ben 10: Ultimate Alien follows a 16-year-old Ben Tennyson after his secret identity is exposed to the world, making him an international superstar. Armed with the Ultimatrix, which allows him to evolve his aliens into "Ultimate" forms, he must navigate fame while battling new intergalactic threats.

The series consists of 52 episodes split across three primary story arcs. Arc 1: The Aggregor Saga (Episodes 1–16)

The Exposure: Ben’s identity is revealed by a young fan named Jimmy Jones. While most kids idolize him, adults and news anchor Will Harangue label him a menace.

The Osmosian Threat: An Osmosian named Aggregor kidnaps five aliens from the Andromeda Galaxy. Ben attempts to rescue them, but Aggregor eventually absorbs all five, becoming Ultimate Aggregor.

The Map of Infinity: Aggregor seeks the four pieces of the Map of Infinity to reach the Forge of Creation, where he intends to absorb the powers of a newborn Celestialsapien (Alien X's race).

The Climax: In a desperate bid to stop Aggregor, Kevin Levin absorbs the energy of the Ultimatrix, becoming a powerful, insane mutation known as Ultimate Kevin.

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

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 ben 10: ultimate alien all episodes

, 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

Introduction

Ben 10: Ultimate Alien is an American animated television series created by Man of Action (a group consisting of comic book writers Joe Casey, Joe Kelly, Duncan Rouleau, and Steven T. Seagle). The series is a sequel to Ben 10: Alien Force and the fifth installment in the Ben 10 franchise. The show premiered on April 23, 2010, and concluded on March 31, 2012.

Plot

The series takes place a year after the events of Ben 10: Alien Force. Ben Tennyson (voiced by Yuri Lowenthal) is now 15 years old and has become a superhero, known as Four Arms, thanks to his alien transformations. However, his life is turned upside down when a mysterious being known as "The Creator" reveals that Ben's ultimate form, the "Ultimate form," is actually a threat to the universe.

The Creator sends an assassin, Vilgax, to eliminate Ben, but he fails. Ben then learns that his ultimate form is not just a simple transformation, but a being with incredible powers. The series follows Ben as he tries to control his newfound powers and evade various villains who seek to exploit his abilities.

Characters

Ben Tennyson (Four Arms): The protagonist of the series, a 15-year-old boy who can transform into different alien creatures.
Kevin Martin (Kevin 11): Ben's best friend and a genius inventor.
Gwen Tennyson: Ben's cousin, a skilled martial artist and fashion designer.
Vilgax: The main antagonist, an assassin sent to eliminate Ben.
The Creator: A mysterious being who reveals Ben's ultimate form and serves as a guide for him.

Episodes

Here is a list of all 52 episodes of Ben 10: Ultimate Alien:

"Video Games" (April 23, 2010)
"Good Old Fashioned Hate" (April 23, 2010)
"The Secret of the Four Arms" (April 30, 2010)
"Ben 10: Ultimate Alien - The Birth of a Hero" (May 7, 2010)
"The Five Aliens" (May 14, 2010)
"The Big Chill" (May 21, 2010)
"High Override" (May 28, 2010)
"The Mother of All Guns" (June 4, 2010)
"Video Games 2" (June 11, 2010)
"The Power Surge" (June 18, 2010)
"Storm Chaser" (June 25, 2010)
"The Jetray" (July 2, 2010)
"The Forge of Fire" (July 9, 2010)
"Escape from Vilgax" (July 16, 2010)
"Of Clones and Lones" (July 23, 2010)
"The Unnatural" (July 30, 2010)
"Mr. Matt" (August 6, 2010)
"Pluto's Shocking Secret" (August 13, 2010)
"The Incredible Adventures of the Sub-Zero" (August 20, 2010)
"The Great Dozer Heist" (August 27, 2010)
"The Busted Bounty Hunter" (September 3, 2010)
"The High Override Heist" (September 10, 2010)
"The Duplicates" (September 17, 2010)
"The Forever Train" (September 24, 2010)
"The Diamond of Hate" (October 1, 2010)
"The Alien in the Attic" (October 8, 2010)
"The Amazing Adventures of Grandpa Phil" (October 15, 2010)
"The Lie of the Lizard" (October 22, 2010)
"Lawnmower" (October 29, 2010)
"The Brain Freeze" (November 5, 2010)
"The Wild Wild West" (November 12, 2010)
"The Gunslinger" (November 19, 2010)
"End of the Road" (November 26, 2010)
"The We Are Family" (December 3, 2010)
"The Very First Ben 10" (December 10, 2010)
"High Override Hijinks" (January 21, 2011)
"The Power of the Four Arms" (January 28, 2011)
"Out of Control" (February 4, 2011)
"Uncontrollable" (February 11, 2011)
"The Ultimate Showdown, Part 1" (February 18, 2011)
"The Ultimate Showdown, Part 2" (February 25, 2011)
"The Big Cheese" (March 4, 2011)
"The New Four Arms?" (March 11, 2011)
"Ben vs. the Toughest Alien" (March 18, 2011)
"Albedo, Part 1" (March 25, 2011)
"Albedo, Part 2" (April 1, 2011)
"The Albedo Imperative, Part 1" (April 8, 2011)
"The Albedo Imperative, Part 2" (April 15, 2011)
"Lawless" (April 22, 2011)
"The Upgrade, Part 1" (April 29, 2011)
"The Upgrade, Part 2" (May 6, 2011)
"The True Ultimate Experience" (March 31, 2012)

Reception

Ben 10: Ultimate Alien received generally positive reviews from critics, with praise for its action-packed storylines, humor, and character development. However, some critics noted that the series was too similar to its predecessors and lacked originality.

Conclusion

Ben 10: Ultimate Alien is an exciting and action-packed animated series that offers a fresh take on the Ben 10 franchise. With its engaging storylines, lovable characters, and stunning visuals, it's no wonder that the series has gained a loyal fan base. If you're a fan of the Ben 10 franchise or just looking for a fun and adventurous animated series, Ben 10: Ultimate Alien is definitely worth checking out!

Skip-Worthy Episodes

“Viktor: The Spoils” – Weak filler.
“Eye of the Beholder” – Julie & Ben relationship drama feels out of place.
“Night of the Living Nightmare” – Dream episode with little plot impact.

Season 1 (Episodes 1–20) – The Aggregor Arc

Main villain: Aggregor – a Osmosian (like Kevin) seeking to absorb five aliens to gain godlike power.
Key episodes:
- “Fame” (S1E1) – Ben reveals his identity.
- “Escape from Aggregor” – The hunt for the Andromeda 5 aliens begins.
- “Ultimate Aggregor” – Aggregor succeeds; Ben fails to stop him.
- “Absolute Power” (Parts 1–2) – Kevin goes insane absorbing the Ultimatrix’s energy, leading to a dark, emotional climax.

Review: The Aggregor arc is tight, mature, and suspenseful. It’s arguably the franchise’s best-written storyline, with real stakes, moral ambiguity (Ben considers killing Kevin), and excellent action. The “ultimate” forms (Ultimate Humungousaur, Ultimate Echo Echo, etc.) are fun but underutilized.

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. Ben 10: Ultimate Alien follows a 16-year-old Ben

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.

5. "The Ultimate Enemy" (Season 3, Ep 47-48)

The series finale. Vilgax absorbs Dagon and becomes omnipotent. Ben wields the sword Ascalon. The ending sees Ben sacrifice the Ultimatrix to literally "reset" the universe’s power balance. It directly leads into Ben 10: Omniverse.

How to Watch Ben 10: Ultimate Alien in Chronological Order

Unlike Alien Force (which had some timeline confusion), Ultimate Alien is straightforward. Watch the episodes in broadcast order (Season 1, then 2, then 3).

However, note that "Ben 10,000 Returns" takes place after "The Creature from Beyond" but before "The Flame Keeper's Circle." Stick to the list above, and you will be fine.

Series Overview: The Ultimate Context

Before diving into the episode list, here is the quick statistical breakdown of the series:

Total Episodes: 52
Number of Seasons: 3 (though syndication often splits it into 2)
Original Air Date: April 23, 2010 – March 31, 2012
Network: Cartoon Network
Preceded by: Ben 10: Alien Force (Season 3 directly leads into Ultimate Alien)
Followed by: Ben 10: Omniverse

The Premise: After the events of Alien Force, Ben’s secret identity is exposed to the world by the villainous aggregator, Captain Nemesis. Now a global celebrity—and target—Ben must balance high school, fame, and galactic threats. The Ultimatrix, created by the rogue genius Albedo, allows Ben to evolve his aliens into their “Ultimate” forms (e.g., Ultimate Humungousaur, Ultimate Echo Echo).

Season 2 (2011–2012)