Who voices Groot in the Guardians of the Galaxy films?

The answer is: Vin Diesel. Yup, Vin Diesel of Fast & Furious fame is part of the MCU with just three little words. We think that’s a pretty good gig already, but apparently Vin was paid in the ballpark of $13 million for each film in which he played Groot, which by our count is six total. Hey, Marvel, I’ll give you six words for half that price!Source