It's possible you may be thinking of:
* Dr. Ivo "Eggman" Robotnik: The main antagonist of the Sonic the Hedgehog series, known for his robotic creations and constant attempts to conquer the world.
* Dr. Julian Robotnik: Dr. Eggman's grandfather and a genius scientist, who appears in the Sonic the Hedgehog Archie Comics. He was known for his invention of the Roboticizer, a device that could transform living creatures into robots.
If you provide more context or details about this "Gyro Robotnik" character, I might be able to help further!