Set of 2 Transformers Playskool Heroes Rescue Bots Academy Converting Toys, 4.5-Inch Action Figure. Bumblebee & Optimus Prime. Imagine helping Optimus Prime save the day! As a mighty Hot Rod truck, Optimus Prime is ready to take to the streets and charge to the rescue! Kids ages 3 and up can pretend there is a dangerous situation unfolding and convert the brave 4.5-inch Optimus Prime action figure from a robot to a Hot Rod truck they can imagine racing to the scene for a courageous rescue.