Ben 10: Season 1 - 13 Episode s
1x1 - And Then There Were 10
December 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.
1x2 - Washington B.C.
January 13, 2006
Ben must fight Dr. Animo, a crazed scientist who has a DNA-altering device.
1x3 - The Krakken
January 14, 2006
Ben has his hands full with a giant sea monster and an evil poacher.
1x4 - Permanent Retirement
January 21, 2006
Ben must rescue his aunt and grandfather when they are held hostage by shape-shifting aliens.
1x5 - Hunted
January 28, 2006
Ben is pursued by three bounty hunters sent by Vilgax to steal the Omnitrix.
1x6 - Tourist Trap
February 4, 2006
Ben accidentally releases creatures made of electric energy and must use his own powers to recapture them.
1x7 - Kevin 11
February 11, 2006
Ben meets a mutant who can absorb any form of energy and may be after the Omnitrix.
1x8 - The Alliance
February 18, 2006
Ben clashes with a female gang member who's become part cyborg.
1x9 - Last Laugh
February 25, 2006
Ben discovers an evil circus that's headed by a psychic vampire clown named Zombozo.
1x10 - Lucky Girl
March 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.
1x11 - A Small Problem
March 11, 2006
Ben gets revenge on an amusement-park attendant who said he was too small to go on a ride.
1x12 - Side Effects
March 18, 2006
Ben's summer cold causes strange physical changes in his alien personas.
1x13 - Secrets
March 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.