|This character exists primarily or exclusively within the Sonic X continuity.|
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
Bat Brains are robots based off of bats. Their upper body is blue with their lower body being gray. They possess bat wings as well as a rocket for a tail that allow them to fly.
After Sonic the Hedgehog arrived in the Marble Zone, he decided to take shelter in a nearby ruin. Within this ruin, he encountered several Bat Brains that attempted to attack him, but they were swiftly taken care of and had their Rockies released.