Groot, a character from the Marvel Cinematic Universe, is a Flora colossus, an extraterrestrial humanoid species that resembles trees. Voiced by Vin Diesel and portrayed through motion capture by various actors including Diesel, Krystian Godlewski, Sean Gunn, James Gunn, and Terry Notary, Groot is a member of the Guardians of the Galaxy. The character first appeared in the 2014 film Guardians of the Galaxy and has since appeared in several other films and series. Groot is known for his limited vocabulary, often only saying I am Groot.