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A mysterious alien substance copies Ben's appearance and powers while Ben is visiting a space museum, and quickly assumes the shape of other people, leaving the Tennysons to find a way to reveal who is actually the mysterious substance. Note: This episode is a parody of The Thing.
First Air Date : Oct 01, 2016
Last Air date : Jul 14, 2020
Episode : 166 Episode
Season : 4 Season
Runtime: 11:14 minutes
Studio: Cartoon Network
Country: United States of America
Crew:
