Construct! Customize! Convert! These 2 Construct-Bots come in pieces, and it's up to you to build them both! Use the 135 pieces to build Optimus Prime and Megatron robots. Once they're built in robot mode, arm them with their firing missiles and start the Autobot-Decepticon smackdown. Then convert them to vehicle mode or tear them down to build them as vehicles! Build your own Transformers adventures with this Optimus Prime Vs. Megatron Construction Set! Transformers and all related characters are trademarks of Hasbro.