When 10-year-old Ben Tennyson discovers a mysterious device, he gains the power to change into ten different alien heroes, each with uniquely awesome powers. With such abilities at his disposal, Ben realizes a greater responsibility to help others and stop evildoers, but that doesnt mean hes above a little superpowered mischief now and then. | Animation, Sci-Fi & Fantasy, Action & Adventure, Comedy, Kids | 4 Seasons | 49 Episodes | Series Premiere: Dec 27, 2005 | Last/Latest Episode: S04 E13 on Apr 15, 2008