Popsugar Entertainment Halloween Guardians of the Galaxy Halloween Costumes How to Be Your Favorite Guardians of the Galaxy Character For Halloween October 13, 2014 by Shannon Vestal Robson View On One Page Photo 3 of 10 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 3 Groot What to wear: A body- and head-covering tree costume. Time to get creative with the DIYs. How to act: Lumber around and only say one thing: "I am Groot." Previous Next Start Slideshow HalloweenHalloween CostumesMoviesGuardians Of The Galaxy