— The explosive Season 2 finale . Ben devises a plan to capture the Highbreed Earth Commander and force a full retreat. During the final battle, Kevin is threatened, and an enraged Gwen releases her dormant Anodite self for the first time. Ben and the team fight their way into the Highbreed Control Tower. After defeating the Commander, Ben discovers the tragic truth: the Highbreed are dying from genetic degradation. Using the Omnitrix, Ben repairs their damaged DNA, ending the war not through destruction, but through mercy .
The Omnitrix turns Ben into the aggressive Rath.
Ben transforms into the omnipotent but difficult-to-control Alien X. Season 2 (Episodes 14–26) all ben 10 alien force episodes
The team must protect a cargo ship carrying a crucial component.
Gwen forces Kevin to take her to her high school spring formal dance. Meanwhile, Ben's Necrofriggian alien form, Big Chill, takes complete control of his mind, flying around the city eating metal to build a nest for newborn alien offspring. 18. Undercover — The explosive Season 2 finale
Season 1 focuses on Ben navigating his teenage life while mastering new aliens. He, Gwen, and Kevin Levin (now an ally) hunt for Grandpa Max and face the Dnaliens—a species trying to purge human DNA. Ben 10 Returns: Part 2 Everybody Talks About the Weather Kevin's Big Score All That Glitters Max Out Pier Pressure What Are Little Girls Made Of? The Gauntlet Paradox Be-Knighted Plumbers' Helpers X = Ben + 2 (The debut of Alien X) Season 2: The War of the Worlds (2008–2009)
: Gwen's brother Ken goes missing in a town overrun by DNAliens. Pier Pressure Ben and the team fight their way into
– Albedo steals the Ultimatrix and joins forces with Vilgax to kidnap Ben's friends.