Your son is going to transform into a happy camper this Halloween once he puts on the Transformers 3 Optimus Prime Toddler Muscle Costume. This costume will make him the leader of the Autobots and give him the power to save the Earth. This costume comes with a red and blue jumpsuit that is filled with metal and gears from the giant robot. The headpiece is the same way and is worn like a mask that covers the eyes. The Earth is being attacked by the Decepticons and you'll be the leader in stopping it. The Transformers trilogy is one of the most watched of the decade, so make sure your child can dress as one of the main characters this Halloween.