They are Groot. It's as simple as that! Have your child dress up in this Marvel Groot Toddler Jumpsuit Costume for upcoming events so they can enjoy playing their favorite Guardian of the Galaxy. Groot is a tree-like creature from the popular Marvel comic book and film series. You receive a jumpsuit piece with attached hood. He may not talk much and is currently stuck in a bit of a growth spurt, but Groot has definitely been a favorite ever since his first appearance. Prepare to take on intergalactic threats in this Groot costume. Or, enjoy it during Halloween parties and cosplay conventions!