Ben 10: Omniverse (2012)
S02E01 Outbreak
Episode Overview
When Psychobos swipes a fragment of the Omnitrix core, the device starts to act erratically. This chaos leads to Rook undergoing an unexpected transformation, becoming a bizarre mix of a Gourmand and a Revonnahgander just as Ben 10 is trying to finish a transformation of his own.
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S02
