Relatives:Granddaughter:Maria,Grandson:Eggman.
Creation:biolizard,Shadow The Hedgehog
First Appearance:Sonic Adventure 2
A brilliant scientist and Dr. Eggman's grandfather.Noted as one of the brilliant minds of all time,Professor Gerald designed the world's first space colony "ARK".He was also involved in the development of the utlimate life form:"Project Shadow".But then later disapeared under mysterious circumstances.
