War Machine

War Machines are objects that appear in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. They were drone steamrollers controlled by Robotnik to destroy the surface of Mobius.

History
Doctor Robotnik activated his War Machines after he captured the Knothole Freedom Fighters and put their minds in virtual reality. He set them to destroy any resistance to him, and to destroy the old world so he can make his perfect society. Once Sonic realized he was in virtual reality, he summoned a terminal to see what Robotnik was doing and saw the War Machines destroying Mobius. Since he had access to Robotnik's terminal, he took control of the War Machines and sent them on a route to Robotropolis. Robotnik released the Freedom Fighters before the War Machines destroyed Robotropolis. Sonic then made the War Machines destroy each other before he and the Freedom Fighters escaped.