16-year-old hero Ben Tennyson, whose watch-like device allows him to transform into various aliens, is paired with a rookie partner, and then with his own younger self, in battles with a mysterious alien hunter and with various enemies from his past.
Yuri Lowenthal as Ben Tennyson (16 years old),
Tara Strong as Young Ben Tennyson (11 years old),
Bumper Robinson as Rook Blanko,
Paul Eiding as Grandpa Max Tennyson,
David Kaye as Khyber,