Ben 10

S02E02 The Big Tick

While visiting Yellowstone Park, Ben and Gwen stumble upon a new transformation in the Omnitrix: Cannon Bolt, an alien resembling an armadillo that Ben isn't particularly excited about. Things take a turn when a meteor crashes nearby, bringing with it a tick-like creature that devours planets. Alongside it, three other aliens appear, hailing it as their savior, the "Great One." Without the ability to combat the planet-eater using his usual forms, Ben finds himself forced to tap into the unfamiliar powers of his new transformation.