The character’s Sonic 3 movie rendition appears to be loosely ... the grandfather of Dr Ivo “Eggman” Robotnik, worked to find a cure for all known illnesses by creating an immortal lifeform.
Within the Sonic the Hedgehog Universe, Gerald Robotnik created Shadow as an anthropomorphic hedgehog / Black Arms hybrid on board Space Colony ARK. Robotnik hoped of finding a cure for his ...