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