Yo Gabba Gabba Deluxe Brobee Costume. Brobee is a furry little green monster from the hit Nick, Jr. TV Show Yo Gabba Gabba. The Yo Gabba Gabba Deluxe Brobee Costume comes with a super furry light and dark green jumpsuit with matching mittens. He is a curious little monster who plays the drums for the Gabba band. The hat has all of Brobee's facial details and rests comfortably on top of your child's head. It won't effect his or her vision or cover his or her face. Your child will love the cuddly, cute Brobee costume.