Ben 10 Episodes ranked

Ben manages to unlock the master code on the Omnitrix, allowing him to change at will. It comes in handy now that Vilgax and Kevin 11 are teamed up and coming for him.

Vilgax himself finally comes after Ben. As Ben finds Vilgax to be more than he and his alien selves can handle, Grandpa Max reveals a secret past when he seeks help from a hidden base beneath Mount Rushmore.

Grandpa tries to help Ben by setting up a training area. He also tries to teach him to think about his selections and his moves. In the mean time, Vilgax sends some bounty hunters after the Omnitrix.

Kevin and Ben become part of an alien abduction where they find themselves enslaved and forced to take part in televised galactic gladiatorial games.

Gwen and Ben find themselves abducted into the future in order to help their future selves with a problem, but Dr. Animo keeps them busy by reanimating Vilgax.

While under fire, Azmuth reattaches the dial which not only reactivates the Omnitrix, but also unlocks and transforms Ben into a To'kustar, an extremely powerful transformation he names Way Big.

One of Ben's aliens decides to leave the Omnitrix and take over the world but needs to merge with Ben to become whole.

Apparently, Ben's aliens have been creating havoc across the country. Have they, really? As Federal agents come gunning for him in San Francisco, Ben gets the lowdown from a former friend.

Ben's son, Ken, turns ten. As a birthday gift, Ben gives Ken an Omnitrix, with ten aliens. Ken soon befriends Devlin, a youth with some ties to an archenemy of Ben's.

In this two-parter conclusion, the Tennysons struggle in outer space to prevent Earth from becoming Ghostfreak's darkened domain.

Ben meets a teenager named Kevin in an arcade. He has the ability to absorb any form of energy. They team up, only for Ben to discover that Kevin is only interested in using Ben's Omnitrix to do bad.

Ben's secret fear of clowns absents him from the big top just as an evil soul-sucking clown goes into his act, but Gwen, Grandpa Max and the rest of the town aren't as fortunate.

After tangling with a werewolf on Navajo land, Ben starts becoming one.

Ben encounters several past adversaries now working together to affect the latest space ship launch at NASA.

Ben and Gwen get trapped in a Sumo Slammers video game and must work with the game's main character in order to return to the real world.

Ben finds himself having a seemingly perfect day only to discover that it's a plot concocted by Enoch in an effort to retrieve the Omnitrix.

With Negative 10 after the Sub-energy, the Tennysons and Cooper make a final stand at Mount Rushmore to keep them from getting it and taking over the world.

While working on a farm, the Tennysons encounter a meteor-powered mummy that can transform living creatures into monsters.

Texas oil drillers unearth the Mask of Apuk, key to the most powerful and destructive weapon ever created - the Sword of Echtua.

An alien device with metamorphic properties crash lands on Earth and attaches itself to an often-grousing juvenile who's on a road trip with extended family.

The Tennysons investigate the theft of Plumber technology seemingly committed by foes from Ben's past.

Following an altercation in a witchcraft museum, Gwen acquires a potent charm that grants enough extraordinary good luck for her to proclaim herself a new superhero - Lucky Girl.

Charmcaster breaks her Uncle Hex out of prison to help him find the Keystone of Bazell and punish the one who got him imprisoned - Lucky Girl.

Despite Gwen and Grandpa Max's warnings over toying with the Omnitrix, Ben messes around with it until - oops! - he breaks it and his aliens start coming out as fused hybrids.

Being special guests at the first underwater resort excites Ben and Gwen till they meet the owner's snobbish grandson and a plethora of vicious undersea aliens.