Seasons & episodes
4 seasons · 52 episodes
Episode 01
And Then There Were 10
Average kid, ten year old Ben Tennyson, his Grandpa Max and his cousin Gwen's summer of adventure takes an odd turn when Ben discovers a watch like object that has been jettisoned from alien spacecraft high above the Earth.
Episode 02
Washington B.C.
Ben must fight Dr. Animo, a crazed scientist who has a DNA-altering device.
Episode 03
The Krakken
Ben has his hands full with a giant sea monster and an evil poacher.
Episode 04
Permanent Retirement
Ben must rescue his aunt and grandfather when they are held hostage by shape-shifting aliens.
Episode 05
Hunted
Ben is pursued by three bounty hunters sent by Vilgax to steal the Omnitrix.
Episode 06
Tourist Trap
Ben accidentally releases creatures made of electric energy and must use his own powers to recapture them.
Episode 07
Kevin 11
Ben meets a mutant who can absorb any form of energy and may be after the Omnitrix.
Episode 08
The Alliance
Ben clashes with a female gang member who's become part cyborg.
Episode 09
Last Laugh
Ben discovers an evil circus that's headed by a psychic vampire clown named Zombozo.
Episode 10
Lucky Girl
Ben battles a sorcerer who possesses a number of charms, and Gwen suddenly becomes a superhero when one of the charms falls into her hands.
Episode 11
A Small Problem
Ben gets revenge on an amusement-park attendant who said he was too small to go on a ride.
Episode 12
Side Effects
Ben's summer cold causes strange physical changes in his alien personas.
Episode 13
Secrets
Vilgax tries to get the Omnitrix for himself while Grandpa Max's strange past becomes known, causing a showdown between Vilgax and the Tennyson family.
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