Eon

In the film Ben 10: Race Against Time, the alien Eon (played by Christien Anholt), a Chronian from Chronia (both play on the Greek word "chronos", meaning "time" ), uses the Omnitrix to turn Ben into a younger version of himself, due to the fact that the Hands of Armageddon needed the energy of a young Chronian to activate. He also deactivated the failsafe so his DNA would completely overtake Ben's personality, essentially changing Ben into a clone of himself. As Eon, Ben activates the Hands of Armageddon, but returns to normal after Gwen manages to reach Ben inside Eon. Like the original Eon, the Omnitrix clone has vast time manipulation powers, though Ben himself exhibits little of them besides energy projection.