Dr. Ivo "Eggman" Robotnik is an evil genius with an IQ of 300. He has tried countless times to take over Mobius but Sonic stops him everytime. He earned his nickname, Dr. Eggman, from Sonic to tease him. He makes robots and machines to do his work for him. His possible greatest creation was Metal Sonic, a replica of Sonic made to battle with the Blue Blur.