Upon discovering a mysterious device known as the Omnitrix, 10-year-old Ben Tennyson is bestowed with the power to change into 10... More >
Upon discovering a mysterious device known as the Omnitrix, 10-year-old Ben Tennyson is bestowed with the power to change into 10 different alien heroes. Each alien hero has its own unique and awesome powers. Although Ben now has the added responsibility to protect others and fight evil forces, he still manages to find time for some mischief and fun!

The Tennysons pick up the grandson of another Plumber named Cooper, who is hitching a ride home with them. Meanwhile, a Plumber base at Fort Knox is robbed by the Circus Freaks and Sublimino. By the time the Tennysons find out, they are too late to help.
Meagan Smith
Paul Eiding
as Grandpa Max
Charlie Schlatter
as Kevin 11
Richard McGonagle
as Four Arms
Richard Green
as Benmummy
Richard Horvitz
as Grey Matter
Michael Dorn
as Benvicktor
Dave Wittenberg
as Upchuck
Rob Paulsen
Joe Kelly
as Creator
Duncan Rouleau
as Creator
Joe Casey
as Creator
Steve Seagle
as Creator
Sam Register
Brian Miller
Jennifer Pelphrey
Alex Soto
Kelly - Ben 10
as Producer
Kris Zimmerman
as Casting