Emerl

He is a robot referred to as Gizoid by the ancients that is said to be over 4,000 years old, and the cause of the destruction of the Fourth Great Civilization, according to Professor Gerald Robotnik. He is found by Sonic the Hedgehog on Emerald Beach who develops an instant "Link" with him and because of this "Link", will not take orders from anyone else, unless Sonic commands him to.