The Enemy of My Frenemy

The Forge of Creation

Every season of Ben 10: Ultimate Alien ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of Ben 10: Ultimate Alien!

Fame

Duped

Hit 'Em Where They Live

Video Games

Escape from Aggregor

Too Hot to Handle

Andreas' Fault

Fused

Hero Time

Ultimate Aggregor

Map of Infinity

Reflected Glory

Deep

Where the Magic Happens

Perplexhahedron

Nor Iron Bars a Cage

The Enemy of My Enemy

Absolute Power (1)

Absolute Power (2)

The Transmogrification of Eunice

Eye of the Beholder

Viktor: The Spoils

The Big Story

Girl Trouble

Revenge of the Swarm

The Creature from Beyond

Basic Training

It's Not Easy Being Gwen

Ben 10,000 Returns

Moon Struck

Prisoner #775 Is Missing

The Purge

Simian Says

Greetings from Techadon

The Flame Keeper's Circle

Double or Nothing

The Perfect Girlfriend

The Ultimate Sacrifice

The Widening Gyre

The Mother of All Vreedles

A Knight to Remember

Solitary Alignment

Inspector #13

Couples Retreat

Catch a Falling Star

The Eggman Cometh

Night of the Living Nightmare

The Beginning of the End

The Ultimate Enemy (1)

The Ultimate Enemy (2)

With his secret identity now revealed to the world, Ben Tennyson continues to fight evil as a superhero with the help of the newly acquired Ultimatrix.

The Best Seasons of Ben 10: Ultimate Alien

The Best Seasons of Ben 10: Ultimate Alien

Season 2

Season 1