Hollywood and comedic icon Jim Carrey will return as Dr. Robotnik in the upcoming video game sequel, Sonic the Hedgehog 3, it has been confirmed. According to Variety, we have not seen the last of the gloriously mustachioed supervillain, with Carrey now all set to reprise the role of the mad scientist. News that should further excite fans of the little super-speedy hedgehog that could.