Spark up your Transformers adventures with the Dino Sparkers! These Optimus Prime and Grimlock figures are an electrifying Transformers duo. To charge up the leader of the Autobots, just put him on Grimlock's back and pull him back. When the moment is right, all you have to do is let go, and they'll both lunge into the attack, making battle sparks as they go! Will their enemies be able to stand against their charge? Mount up for high-powered Dino Sparkers action with your Optimus Prime and Grimlock heroes!