Devastator (Omniverse)

Devastator is the series finale villain of Ben 10: Omniverse. He is shown to be an apocalyptic villain that threatens the lives of everyone on planet Earth, and proves to be more than a match for Ben Tennyson.

Powers and Abilities
Devastator has an extreme power that is able to overwhelm even Ben's most powerful form, Atomix. He is able to manipulate molecules with a single thought, and has strength powerful enough to lift an entire building, able to fly at speeds of 500 miles per minute, and can manipulate the minds of others.

He is also shown to possess technology powerful enough to enhance the powers and abilities of anybody used on it, and

Personality
Devastator keeps his identity hidden with a mask, making him mysterious. He is also extremely sadistic and psychopathic, wanting to destroy the entire Earth just for his pleasure.

History
Several thousand years ago, Ben's Egyptian ancestor, Savau Tenisuon came across a being from another universe called Devastator, who wanted to harvest the Earth in order to create a new civilization ruled by him consisting of clones (both male and female) of himself. Savau took some of Devastator's technology and mutated himself, leading an army against the might of Savau, but Devastator was too powerful for the army and killed them all save for Savau. Ultimately, Savau was believed to have sacrificed himself by imploding Devastator's ship to destroy them both. However, instead, they were sent to the astral plane.

In the present, Psyphon discovers the legend of Devastator and finds that he may still be alive, plans to find Devastator and give his power to Vilgax. Stealing Gwen's spell book, Psyphon traveled to the astral plane only to be followed by Ben and Rook Blonko. There, on Devastator's ship, Ben, Rook, and Psyphon were confronted by several of Devastator's genetically mutated monsters. The three were forced to work together to fight off the monsters, but noticing how the portal out of the astral plane was about to close, Ben, Rook, and Psyphon tried to leave, though Psyphon was captured by Devastator's monsters and couldn't get out of the astral plane. He was then brought before the hibernating body of Devastator, who soon awoke, and saw big ideas out of Psyphon.