Ben 10
The story of Ben Tennyson, a typical kid who becomes very atypical after he discovers the Omnitrix, a mysterious alien device with the power to transform the wearer into ten different alien species
Ben 10: Secret of the Omnitrix (2007)
When the Omnitrix begins a countdown to self destruction, Ben and Gwen team up with Tetrax to find the watchs creator before its too late