On their first night camping in their grandfather's RV, nicknamed the Rust Bucket, Ben finds a mysterious watch-like alien device that attaches itself upon his wrist, giving him the ability to transform into several (initially ten but later more) alien life-forms, each with special abilities. The series centers on Ben Tennyson, a 10-year-old boy on a summer vacation road trip with his cousin Gwen and their grandfather Max, who is later revealed to be a member of a secret intergalactic organization called the Plumbers. On February 17, 2021, it was announced that three 44-minute specials based on the series would premiere in April 2021: titled Ben 10,010, Ben Gen 10 and Alien X-Tinction, serving as the series finale to the 2016 reboot and a crossover between the first four television series in the franchise.

Worldwide, the franchise has grossed over $6 billion in retail sales.

There is also a Ben 10 toy line manufactured by Bandai for the first four shows and Playmates Toys for the reboot. Spanning over 16 years, it is Cartoon Network's second longest-running franchise to date. It consists primarily of 5 television series and 5 films, the latter of which aired between August 2007 and October 2020. The Ben 10 franchise has received widespread critical acclaim, winning 3 Emmy Awards. The Omnitrix initially contains ten aliens, although later on Ben obtains more species by adding and unlocking their DNA.

Using the Omnitrix, Ben can transform into powerful aliens with various abilities. The series centers on a boy named Ben Tennyson who acquires the Omnitrix, an alien device resembling a wristwatch, which contains DNA of different alien species. Ben 10 is an American media franchise created by Man of Action Studios, produced by Cartoon Network Studios and owned by Warner Bros.

Ben 10 ultimate alien game creator