Following the first trailer that arrived just a few days ago, Marvel is introducing fans to the Guardians of the Galaxy one by one. Earlier today, we showed you a Rocket Raccoon featurette with gave us a look at Bradley Cooper voicing the character for the first time. The studio has now debuted a brief featurette on Groot, featuring new interview footage with voice actor Vin Diesel. Groot only has one line in the movie, and we do not get to hear it here...

We first reported that Vin Diesel will portray Groot back in August, although he wasn't officially confirmed by Marvel until December. The actor revealed that he will perform motion capture for Groot, unlike Bradley Cooper, who is only providing the voice for Rocket Raccoon. There won't be much dialogue for Groot. The character is well-known in the comic books for only saying "I am Groot," and the actor revealed in October that he only has one line in the entire movie. It should be noted, though, that he says this line in a number of different ways and iterations, with a range of inflection.

Are you excited to see more from Groot, and to finally hear Vin Diesel utter this famous line? Chime in with your thoughts below.