Ben 10: Omniverse (2012)

S7E9 It's a Mad, Mad, Mad Ben World (1)

A menacing Chronosapien named Maltruant seeks to seize complete power over the time-space continuum using an ancient artifact known as the Key to Time. To counter this threat, Azmuth from Ben 23's universe sends him to Ben Tennyson's world, where he hopes Ben Tennyson can guide and mentor him in facing Maltruant's dangerous ambitions.