SCR-HD

SCR-HD was a robot produced by MeteorTech who appeared in Sonic Riders: Zero Gravity, and essentially the main antagonist of the game. It contained an Ark of the Cosmos until it spontaneously exploded, and was taken by Storm. SCR-HD was the leader of the more common, mass-produced SCR-GP and used its own Ark of the Cosmos, as well as the one in Eggman's master computer, to command all the MeteoTech robots.