Geek: Vin Diesel is Finally Groot!

@JamesGunn: Vin Diesel is a super awesome dude. I can’t tell you how much I like this guy. http://t.co/5DGVcrEXFN

And with that, Guardians of the Galaxy director James Gunn seemingly confirms that Vinny is actually portraying The monosyllabic tree-person through voice over.

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