Benjamin Kirby "Ben" Tennyson, also known as Ben 10, is the  main protagonist of the series Ben 10.  he unintentionally gets a  powerful watch-like alien device, the Omnitrix,  which latches onto his  wrist, giving him the incredible power and  ability to transform into  ten (later more) super-powered aliens. Unable  to remove or destroy it,  he uses his new powers and abilities to become a  superhero, dealing  with both aliens and earth threats, while trying to  escape the alien  warlord Vilgax, who pursue him relentlessly in order to retrieve the  Omnitrix.


























