Seasons & episodes

S1 · E1And Then There Were 10 2005-12-27 · 23 min＋

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.

S1 · E2Washington B.C. 2006-01-13 · 23 min＋

Ben must fight Dr. Animo, a crazed scientist who has a DNA-altering device.

S1 · E3The Krakken 2006-01-14 · 23 min＋

Ben has his hands full with a giant sea monster and an evil poacher.

S1 · E4Permanent Retirement 2006-01-21 · 23 min＋

Ben must rescue his aunt and grandfather when they are held hostage by shape-shifting aliens.

S1 · E5Hunted 2006-01-28 · 23 min＋

Ben is pursued by three bounty hunters sent by Vilgax to steal the Omnitrix.

S1 · E6Tourist Trap 2006-02-04 · 22 min＋

Ben accidentally releases creatures made of electric energy and must use his own powers to recapture them.

S1 · E7Kevin 11 2006-02-11 · 22 min＋

Ben meets a mutant who can absorb any form of energy and may be after the Omnitrix.

S1 · E8The Alliance 2006-02-18 · 22 min＋

Ben clashes with a female gang member who's become part cyborg.

S1 · E9Last Laugh 2006-02-25 · 23 min＋

Ben discovers an evil circus that's headed by a psychic vampire clown named Zombozo.

S1 · E10Lucky Girl 2006-03-04 · 23 min＋

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.

S1 · E11A Small Problem 2006-03-11 · 23 min＋

Ben gets revenge on an amusement-park attendant who said he was too small to go on a ride.

S1 · E12Side Effects 2006-03-18 · 22 min＋

Ben's summer cold causes strange physical changes in his alien personas.

S1 · E13Secrets 2006-03-25 · 23 min＋

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.