Ben 10 — Season 1
01 And Then There Were 10
Dec 27, 200523m★ 7.3
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.
02 Washington B.C.
Jan 13, 200623m★ 6.5
Ben must fight Dr. Animo, a crazed scientist who has a DNA-altering device.
03 The Krakken
Jan 14, 200623m★ 6.5
Ben has his hands full with a giant sea monster and an evil poacher.
04 Permanent Retirement
Jan 21, 200623m★ 6.7
Ben must rescue his aunt and grandfather when they are held hostage by shape-shifting aliens.
05 Hunted
Jan 28, 200623m★ 7.2
Ben is pursued by three bounty hunters sent by Vilgax to steal the Omnitrix.
06 Tourist Trap
Feb 4, 200622m★ 6.6
Ben accidentally releases creatures made of electric energy and must use his own powers to recapture them.
07 Kevin 11
Feb 11, 200622m★ 7.3
Ben meets a mutant who can absorb any form of energy and may be after the Omnitrix.
08 The Alliance
Feb 18, 200622m★ 7.2
Ben clashes with a female gang member who's become part cyborg.
09 Last Laugh
Feb 25, 200623m★ 6.6
Ben discovers an evil circus that's headed by a psychic vampire clown named Zombozo.
10 Lucky Girl
Mar 4, 200623m★ 6.9
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.
11 A Small Problem
Mar 11, 200623m★ 7.2
Ben gets revenge on an amusement-park attendant who said he was too small to go on a ride.
12 Side Effects
Mar 18, 200622m★ 6.7
Ben's summer cold causes strange physical changes in his alien personas.
13 Secrets
Mar 25, 200623m★ 7.9
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.