Ben 10 Cartoons

Ben 10 is an American animated television series. Benjamin (Ben) Tennyson, his cousin Gwen, and his grandfather Max are the main characters. When Ben sneaks off, he finds an alien pod on the ground called the Omnitrix which is a watch-like device. The device attaches permanently to his wrist and gives him the ability to transform into a variety of alien lifeforms, each with their own unique powers.