Five years after he first found the Omnitrix, 15-year-old Ben Tennyson returns to heroics in Ben 10: Alien Force . This era of the franchise is widely praised for its darker tone, more complex characters, and overarching narrative arcs. With 46 episodes spanning three seasons, the series follows Ben, Gwen, and a reformed Kevin Levin as they battle planetary threats like the Highbreed and the return of the conqueror Vilgax.
Following the conclusion of the Highbreed war, the third season shifted toward more episodic adventures and the return of Ben’s greatest nemesis. Vengeance of Vilgax