Ben 10: Ultimate Alien is an American animated television series created by the team Man of Action, produced by Cartoon Network Studios, and distributed by Warner Bros.

With the Omnitrix having been destroyed, Ben Tennyson, now sixteen years old, must learn to master the powers of the Ultimatrix, a modified version of the Omnitrix which has the ability to evolve Ben's alien forms into much more powerful versions known as "ultimate forms."

The series begins with the exposure of Ben's secret identity to the world by J. Jonah "Jimmy" Jones, a young internet conspiracy theorist who deduces his identity by studying alien sightings in Ben's hometown of Bellwood.

Aggregor intends to enter the Forge of Creation and steal the powers of an infant Celestialsapien, a species of all-powerful, godlike aliens which can manipulate reality and time to an essentially unlimited extent with their thoughts.

But with the aid of Gwen, he is able to instead remove Kevin's absorbed powers, saving him and restoring the five aliens from the Andromeda Galaxy back to life.

Though tempted by the sword's power to wipe out all evil with a mere thought, Ben overcomes the temptation and returns it to Azmuth.

Just like every other iteration of the Ben 10 series, Ultimate Alien received a video game based on its premise.