Ben 10: Ultimate Alien: All Episodes Patched

The first season focuses on Ben, Gwen, and Kevin trying to stop Aggregor from capturing the Andromeda Five aliens.

The emotional climax is Kevin absorbing the Ultimatrix and becoming an insane, power-hungry mutant. Ben is forced to make a heartbreaking decision about whether to kill his best friend. Season 2 (2011) – The Dagon Arc Episode Count: 12

| Ep # | Title | Critical Moment | | :--- | :--- | :--- | | 33 | | Elena’s obsession with Ben | | 34 | The Ultimate Sacrifice | Ultimatrix aliens gain sentience | | 35 | The Widening Gyre | Underwater adventure | | 36 | The Mother of All Vreedles | Comedy episode | | 37 | A Knight to Remember | Sir George returns | | 38 | Solitary Alignment | N/A | | 39 | Inspector 13 | Tech-based enemy | | 40 | The Enemy of My Frenemy | Charmcaster betrays | | 41 | Couples Retreat | Ben/Julie and Gwen/Kevin double date | | 42 | Catch a Falling Star | Jennifer Nocturne, the actress | | 43 | The Eggman Cometh | N/A | | 44 | Night of the Living Nightmare | Trap episode (Ben in a dream) | | 45 | The Beginning of the End (Part 1) | Dagon breaks free | | 46 | The Beginning of the End (Part 2) | Ben loses the Ultimatrix | | 47 | The Ultimate Enemy (Part 1) | Vilgax becomes a god | | 48 | The Ultimate Enemy (Part 2) | Ben turns into Ascalon + Final battle | | 49-52 | (Four additional standalone filler episodes) | Clyde 5 , Rules of Engagement , What Are Little Girls Made Of? , The Wolf Among Us | ben 10: ultimate alien all episodes

8.5/10 – An essential watch for any Ben 10 completionist. Do you agree with our list? Did we miss your favorite Ultimate alien transformation? Let us know in the comments below. And for more episode guides, check out our articles on "Ben 10: Original Series all episodes" and "Ben 10: Omniverse all episodes."

The final season wraps up every loose thread, culminating in a massive battle between Ben, Vilgax (who has fused with Dagon), and an unexpected savior. The first season focuses on Ben, Gwen, and

When Ben 10: Alien Force ended on a cliffhanger, fans were hungry for more high-stakes action, darker narratives, and new transformations. Enter Ben 10: Ultimate Alien , the third installment in the original Ben 10 franchise, which aired from April 2010 to March 2012. For anyone searching for a definitive resource on Ben 10: Ultimate Alien all episodes , you have come to the right place. Below, we break down every season, major arc, and essential episode you need to watch. What is Ben 10: Ultimate Alien? Before diving into the full episode list, here is a quick refresher. Ultimate Alien picks up immediately after Alien Force . Ben Tennyson is now 16 years old. The secret of his identity has been exposed to the world, turning him into an international celebrity—and a prime target for every alien bounty hunter and government agency on Earth.

| Ep # | Title | Key Ultimate Alien Debut | | :--- | :--- | :--- | | 1 | | Ultimate Swampfire | | 2 | Duped | N/A (Echo Echo clone chaos) | | 3 | Hit 'Em Where They Live | Ultimate Spidermonkey | | 4 | Video Games | Ultimate Big Chill | | 5 | Escape from Aggregor | Ultimate Cannonbolt | | 6 | Too Hot to Handle | N/A | | 7 | Andreas' Fault | N/A | | 8 | Fused | N/A | | 9 | Hero Time | N/A (Ben meets a fake superhero) | | 10 | Ultimate Aggregor | Ultimate Aggregor (Villain) | | 11 | Map of Infinity | Ultimate Echo Echo | | 12 | Reflected Glory | N/A | | 13 | Deep | N/A | | 14 | Where the Magic Happens | N/A (Charmcaster episode) | | 15 | Perplexahedron | N/A | | 16 | The Forge of Creation | Ultimate Humungousaur (major role) | | 17 | ...Nor Iron Bars a Cage | N/A (Vilgax returns) | | 18 | The Enemy of My Enemy | N/A | | 19 | Absolute Power (Part 1) | Ultimate Kevin (debut) | | 20 | Absolute Power (Part 2) | Ultimate Way Big | Season 2 (2011) – The Dagon Arc Episode

Some episode countings merge the final 4 episodes into the Season 3 run. Regardless, the true finale is "The Ultimate Enemy" (Episodes 47-48). Top 5 Essential Episodes You Cannot Skip If you don’t have time to watch Ben 10: Ultimate Alien all episodes back-to-back, prioritize these five: 1. "The Forge of Creation" (Season 1, Ep 16) Ben travels to a dimension where time doesn't exist to stop Aggregor. He also meets a 5-year-old Ben, which is both adorable and philosophical. This episode features the first true test of the Ultimatrix’s power. 2. "Absolute Power" (Season 1, Ep 19-20) The heaviest story in the franchise. Kevin has become a monster. Ben tries to kill him. Grandpa Max orders Ben to stop. This two-parter asks whether heroes are allowed to be executioners. It remains controversial among fans. 3. "Ben 10,000 Returns" (Season 2, Ep 30) Future Ben (from the original series) comes back and immediately points out how flawed the Ultimatrix is. He fights Ultimate Albedo. The episode connects the entire original timeline and hints at Omniverse . 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).