Ben 10: Ultimate Alien All Episodes

Cash and J.T. start a web show claiming they are the brains behind Ben’s superhero operations, attracting the wrath of Psyphon. Episode 13: "Deep"

Colonel Rozum builds a secret underground base to hold alien prisoners. One invisible prisoner escapes, seeking revenge against Rozum's family. Episode 31: "Moonstruck"

– Julie joins a mysterious cult that worships a "benevolent alien god," who turns out to be a recovering Vilgax. ben 10: ultimate alien all episodes

– Area 51 is compromised, revealing a hidden underground prison holding a vengeful alien assassin.

Gwen’s Anodite cousin, Sunny, comes to visit. Sunny appears sweet but harbors a destructive, rebellious nature that threatens the city. Episode 26: "Revenge of the Swarm" Cash and J

– Ben decides that Kevin has become too dangerous and must be put down, causing a deep rift between him and Gwen.

Ben 10: Ultimate Alien (2010–2012) is the third main series in the Ben 10 franchise, following Ben 10 (original) and Ben 10: Alien Force . It ran for and 52 episodes (plus a special, “Ben 10/Generator Rex: Heroes United”). The show bridges Alien Force and the later Ben 10: Omniverse . Gwen’s Anodite cousin, Sunny, comes to visit

With his new powers, Aggregor seeks the four pieces of the Map of Infinity to reach the Forge of Creation. To stop him, Kevin makes a devastating sacrifice.

The final episodes, dealing with the defeat of Dagon. ⚡ The Ultimate Aliens

, a device that allows Ben to evolve his aliens into more powerful "Ultimate" forms. By the end of the series, Ben has access to approximately 46 distinct alien species, with eight specific "Ultimate" variants appearing on screen. Episode Breakdown by Season