: To stop a nearly god-like Aggregor, Kevin Levin is forced to absorb the Ultimatrix’s energy. He defeats Aggregor but loses his sanity, becoming a mutated villain once again. The arc concludes with Ben and Gwen finding a way to restore Kevin to his human self. Seasons 2 & 3: The Dagon & Vilgax Arc
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The story begins with Ben's secret identity being outed to the world by a young fan. While Ben enjoys his fame, a more serious threat emerges: ben 10: ultimate alien all episodes
The first 20 episodes focus on the Osmosian villain, Aggregor, who attempts to absorb the powers of five aliens from the Andromeda Galaxy. This arc culminates in the high-stakes " Forge of Creation " episode, featuring a crossover with young Ben.
The epic conclusion that transitions the story toward the next series, Omniverse . Series Snapshot Total Episodes: 52 Original Run: 2010 – 2012 Main Cast: Ben Tennyson, Gwen Tennyson, and Kevin Levin. : To stop a nearly god-like Aggregor, Kevin
For fans looking to binge, re-watch, or verify their episode count, this guide covers —from the season premiere to the two-part grand finale. We’ll break down every arc, key transformations, and why this series still matters in the broader Ben 10 timeline.
(2010–2012) is the direct sequel to Ben 10: Alien Force and the third installment in the Man of Action trilogy. Arriving on the heels of Alien Force , which successfully matured the franchise, Ultimate Alien had the difficult task of raising the stakes without losing the charm of its predecessor. While it is often overshadowed by the darker tone of Alien Force or the radical changes of Omniverse , Ultimate Alien stands as a solid, action-packed conclusion to Ben Tennyson’s teenage years. Seasons 2 & 3: The Dagon & Vilgax
Ben 10/Generator Rex: Heroes United (watch between S2E10 and S2E11 for continuity).