The article contains major spoilers for Sonic the Hedgehog 3 ending.The Sonic the Hedgehog 3 writers address whether a backup plan was in place if Jim Carrey did not return as Robotnik.

Grinch's costume and look were carefully ... Shadow from destroying humanity and planet Earth. Jim Carrey plays the eccentric scientist Ivo Robotnik as well as his grandfather Gerald Robotnik ...

Jim Carrey is openly back in the Hollywood game ... and improvising at will in his crazy dual role as Sonic villains Dr. Robotnik and Robotnik's absurdly abusive grandfather.” ...