Ben 10 is an American animated television series that premiered on Cartoon Network in 2005. It follows the adventures of a 10-year-old boy named Ben Tennyson, who discovers a mysterious device called the Omnitrix that allows him to transform into various alien forms.
As Ben learns to use the Omnitrix, he and his cousin Gwen and their grandfather Max travel across the country to fight evil aliens and other villains who want to steal the Omnitrix for their own purposes. Along the way, Ben also learns valuable lessons about responsibility, teamwork, and the importance of using his powers for good.
The show was a huge success, leading to multiple sequels, spin-offs, and merchandise, and is considered a classic of 2000s animation.