Every alien in Ben 10: Alien Force is incredible, but who are the most powerful among them all?

All the Latest Game Footage and Images from Ben 10: Alien Force Ben Tennyson is now 15 and becoming a leader wearing his powerful Omnitrix again. Grandpa Max is missing and Ben needs the help of Gwen ...

Ben discovers that the Forever Knights are trading weapons with the DNAliens, while at the same time, Grandpa Max has mysteriously gone missing. He decides to return the Omnitrix on his wrist and go ...