The tenth installment in the Marvel Cinematic Universe, Guardians of the Galaxy tells the story of a ragtag band of outlaws and extraterrestrial misfits who fight to protect a coveted orb that is sought after by the villain Ronan, portrayed by Lee Pace (Halt and Catch Fire). This Groot costume shirt transforms you into the tree-like humanoid who is Rocket the racoon's close friend and accomplice. The bark design will certainly grow on you the minute you put it on, and unlike real bark, you won't find a pile of bugs under it, unless of course, you don't wash your clothes very often. Wear this Guardians of the Galaxy Groot t-shirt to celebrate the character voiced by Vin Diesel. Let your friends know, "I am Groot."