Groot is the name of two fictional characters voiced by Vin Diesel and portrayed via motion capture by Diesel, Krystian Godlewski, Sean Gunn, James Gunn, and Terry Notary, in the Marvel Cinematic Universe (MCU) media franchise, based on the Marvel Comics character of the same name. Both Groots are depicted as tree-like humanoids, with the original being Rocket's associate, and the second becoming his adoptive son. Both are members of the Guardians of the Galaxy.