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

Upgrade is visually appealing and can merge with and control technology with diverse abilities. XLR8 is a fast and effective alien with incredible speed and offensive capabilities. Heatblast is ...

Ben Tennyson from Ben 10 is one of the strongest fictional characters of all time, and could easy destroy some of the most powerful characters around.