All Ben 10 Alien Force Episodes May 2026

Series Overview

Ben 10: Alien Force is an American animated television series created by Man of Action (Joe Casey, Joe Kelly, Duncan Rouleau, and Steven T. Seagle). The series aired from 2008 to 2010 and is a sequel to the original Ben 10 series.

Episode List

Here is a list of all 46 episodes of Ben 10: Alien Force, including their air dates and brief summaries:

Season 1 (2008-2009)

  1. Five Aliens Later (April 18, 2008) - Ben is recruited by the Plumbers to help fight villains.
  2. Video Games (April 25, 2008) - Ben and Kevin play a video game that becomes all too real.
  3. The Learning Curve (May 2, 2008) - Ben learns to control his alien forms.
  4. The Four Arms (May 9, 2008) - Ben creates a new alien form, Four Arms.
  5. The Biggest Alien of Them All (May 16, 2008) - Ben faces off against a giant alien.
  6. The Swamp Thing (May 23, 2008) - Ben and Kevin investigate a mysterious swamp creature.
  7. The Secret of the Four Aliens (May 30, 2008) - Ben learns about the history of the alien forms.
  8. The High Override (June 6, 2008) - Ben and Kevin face off against a powerful villain.
  9. The Hub (June 13, 2008) - Ben visits the Plumbers' headquarters.
  10. The Prisoner (June 20, 2008) - Ben and Kevin rescue a captured Plumber.
  11. The Incursean (June 27, 2008) - Ben faces off against an Incursean agent.
  12. The Chameleon (July 4, 2008) - Ben and Kevin investigate a mysterious chameleon-like alien.
  13. Mr. and Mrs. Cash (July 11, 2008) - Ben and Kevin go undercover.
  14. The Vampire (July 18, 2008) - Ben faces off against a vampire-like alien.
  15. The Football (September 29, 2008) - Ben and Kevin investigate a mysterious football.
  16. The Boxed In (October 6, 2008) - Ben and Kevin face off against a villain who can trap people in boxes.
  17. The Renegade (October 13, 2008) - Ben and Kevin team up with a former villain.
  18. The Gwen (October 20, 2008) - Gwen becomes a target for a villain.
  19. The Clockwork (October 27, 2008) - Ben and Kevin face off against a clockwork-like alien.
  20. The Echo (November 3, 2008) - Ben and Kevin investigate a mysterious echo-like alien.
  21. The Rise of Highbreed (November 10, 2008) - The Highbreed threaten the Earth.
  22. The Highbreed Invasion (November 17, 2008) - The Highbreed invade the Earth.

Season 2 (2009)

  1. The Wanted (January 10, 2009) - Ben and Kevin are framed for a crime.
  2. The Passenger (January 17, 2009) - Ben and Kevin face off against a villain with a passenger-like alien.
  3. The Conqueror (January 24, 2009) - Ben and Kevin face off against a villain with a conqueror-like alien.
  4. The Containment (January 31, 2009) - Ben and Kevin investigate a mysterious containment facility.
  5. The Merge (February 7, 2009) - Ben and Kevin face off against a villain who can merge with technology.
  6. The Crypt (February 14, 2009) - Ben and Kevin investigate a mysterious crypt.
  7. The Clock Strikes Thirteen (February 21, 2009) - Ben and Kevin face off against a villain with a clock-like alien.
  8. The Fire Inside (February 28, 2009) - Ben and Kevin face off against a villain with a fire-like alien.
  9. The Survivor (March 7, 2009) - Ben and Kevin face off against a villain who claims to be the last survivor of a planet.
  10. The Behemoth (March 14, 2009) - Ben and Kevin face off against a giant alien creature.
  11. The Ball and Chain (March 21, 2009) - Gwen's mom becomes a target for a villain.
  12. The Showdown (March 28, 2009) - Ben and Kevin face off against a villain with a powerful alien form.
  13. The Affected (April 4, 2009) - Ben and Kevin investigate a mysterious phenomenon.

Season 3 (2009-2010)

  1. The Ultimate Enemy (June 13, 2009) - Ben and Kevin face off against their ultimate enemy.
  2. The Red Herring (June 20, 2009) - Ben and Kevin investigate a mysterious red herring-like alien.
  3. The Cute One (June 27, 2009) - Ben and Kevin face off against a villain with a cute-like alien.
  4. The Human Highbreed (July 4, 2009) - The Highbreed threaten the Earth once again.
  5. The Hubris of Highbreed (July 11, 2009) - The Highbreed's true intentions are revealed.
  6. The Highbreed Liberation (July 18, 2009) - The Highbreed are liberated.
  7. The Incursean Agenda (September 21, 2009) - The Incurseans reveal their agenda.
  8. The Consequences (September 28, 2009) - Ben and Kevin face the consequences of their actions.
  9. The Incursean Occupation (October 5, 2009) - The Incurseans occupy the Earth.
  10. The Defeat of the Incurseans (November 16, 2009) - Ben and Kevin lead the fight against the Incurseans.
  11. The Highbreed and Incursean War (April 23, 2010) - The Highbreed and Incurseans go to war.

Helpful Tips

Season 2: The High Breed War (Episodes 14-26)

Season 2 is widely considered the peak of Alien Force. It escalates the High Breed conflict, introduces fan-favorite aliens like Chromastone and Goop, and delivers one of the most shocking plot twists in the franchise.

Episode 22: “Inside Man”

Synopsis: A human disguised as a DNAlien infiltrates the team. Paranoia spreads as Ben suspects Kevin or Gwen of being the traitor. Key moment: The episode is a tight spy thriller with a clever twist.

Episode 23: “Birds of a Feather”

Season 2: The High Breed War (Episodes 14-26)

Vibe: The gloves are off. This is war. The High Breed leader (the "High Override") is revealed, and Ben must evolve beyond just punching enemies. all ben 10 alien force episodes

| Episode | Title | Key Plot Point | | :--- | :--- | :--- | | 14 | Darkstar Rising | Michael Morningstar returns, draining energy. Kevin’s backstory deepens. | | 15 | Alone Together | Fan Favorite. Ben is stranded on a hostile moon with a wounded High Breed soldier. A masterclass in enemy empathy. | | 16 | Good Copy, Bad Copy | Ben fights Albedo—an evil duplicate with his own Omnitrix. | | 17 | Save the Last Dance | Ben’s relationship with girls vs. heroics. | | 18 | Undercover | The team infiltrates the High Breed command. | | 19 | Pet Project | The tragic story of Ship (Gwen’s alien dog). | | 20 | Grounded | Ben’s dad finds out about the Omnitrix. | | 21 | Voided | Return to the Null Void. | | 22 | Inside Man | Stunning twist: A High Breed general defects. | | 23 | Bird of Prey | The origin of the alien bird, Astrodactyl. | | 24 | Unearthed | A subterranean alien civilization. | | 25 | War of the Worlds (Part 1) | Finale. Ben unlocks the "Humungousaur ultimate size" and invades the High Breed homeworld. | | 26 | War of the Worlds (Part 2) | Ben doesn't win by fighting—he cures the High Breed of their genetic sickness, ending the war peacefully. |

Best of S2: Episode 15 (Alone Together). It redefines Ben’s heroism from "beat the bad guy" to "understand the enemy."

Act I: The Legend Reawakens (Season 1)

The story begins five years after Ben Tennyson last wore the Omnitrix. He is no longer the ten-year-old hero; he is a mature, athletic teenager who has put his childhood adventures behind him. But peace is shattered when his grandpa, Max Tennyson, goes missing. Investigating his RV, Ben finds a holographic message: Max has been fighting a dangerous new threat, and he needs Ben to step up.

Ben attempts to put on the Omnitrix, but it recalibrates, locking his classic aliens and granting him ten new, mature forms. He realizes he cannot do this alone. He tracks down his cousin, Gwen, who has honed her magical abilities into pure pink mana, and they seek out Kevin Levin—Ben’s former nemesis. Kevin, now a street-smart teenager with the ability to absorb matter, agrees to help, albeit for his own mysterious reasons.

The trio discovers Earth is being infiltrated by DNAliens—half-human, half-alien drones. They are led by the Highbreed, an arrogant race of aliens who believe they are genetically superior and seek to cleanse the universe of "lower life forms." Series Overview Ben 10: Alien Force is an

Ben’s leadership is tested early on when they meet a Plumber’s kid named Magister Labrid. In a tragic confrontation, Labrid sacrifices himself to save Ben, solidifying the team's resolve. Their mission expands when Ben meets a young Pyronite boy named Alan. They learn that the Highbreed are using Hypnosis-Headgear to turn humans into DNAliens.

The stakes rise when they discover the Highbreed have established massive "Weather Towers" across the globe to terraform Earth, making it freezing and inhospitable for humans. As the team destroys towers across the country, Ben learns a shocking truth: the Highbreed are dying. Their obsession with genetic purity has made them sterile, and their "cleanup" of the universe is a final, desperate act of a dying race.

The season culminates when the Highbreed activate an immense Jump Gate in a castle in Northern California, summoning their fleet to destroy Earth. The team, alongside Max Tennyson—who returns from the Null Void to help—assault the castle. To stop the fleet, Max uses a weapon that bridges the gap between dimensions, seemingly vanishing himself into the Null Void again. Ben, Gwen, and Kevin are left devastated but victorious: the Jump Gate is destroyed, and the Highbreed invasion is momentarily halted.

Ben 10: Alien Force – A Complete Episode Guide and Retrospective

Published by: The Omnitrix Hub Reading Time: 8 minutes

If you grew up in the late 2000s, you remember the seismic shift. We traded the high-energy, cartoonish chaos of the original Ben 10 (2005) for something darker, sleeker, and more serialized. Enter Ben 10: Alien Force (2008). Five Aliens Later (April 18, 2008) - Ben

After a five-year time skip, Ben Tennyson is 15, retired his heroics, and taken off the Omnitrix. That is, until his Grandpa Max vanishes. Alien Force traded the "monster of the week" formula for a war against the High Breed—a genetically superior alien race bent on purifying the galaxy.

Here is your complete guide to all 46 episodes across three seasons, plus a ranking of the must-watch arcs.