E01 · And Then There Were 10 23m
12/27/2005
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.
E02 · Washington B.C. 23m
1/13/2006
Ben must fight Dr. Animo, a crazed scientist who has a DNA-altering device.
E03 · The Krakken 23m
1/14/2006
Ben has his hands full with a giant sea monster and an evil poacher.
E04 · Permanent Retirement 23m
1/21/2006
Ben must rescue his aunt and grandfather when they are held hostage by shape-shifting aliens.
E05 · Hunted 23m
1/28/2006
Ben is pursued by three bounty hunters sent by Vilgax to steal the Omnitrix.
E06 · Tourist Trap 22m
2/4/2006
Ben accidentally releases creatures made of electric energy and must use his own powers to recapture them.
E07 · Kevin 11 22m
2/11/2006
Ben meets a mutant who can absorb any form of energy and may be after the Omnitrix.
E08 · The Alliance 22m
2/18/2006
Ben clashes with a female gang member who's become part cyborg.
E09 · Last Laugh 23m
2/25/2006
Ben discovers an evil circus that's headed by a psychic vampire clown named Zombozo.
E10 · Lucky Girl 23m
3/4/2006
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.
E11 · A Small Problem 23m
3/11/2006
Ben gets revenge on an amusement-park attendant who said he was too small to go on a ride.
E12 · Side Effects 22m
3/18/2006
Ben's summer cold causes strange physical changes in his alien personas.
E13 · Secrets 23m
3/25/2006
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.