While the live-action threequel follows Sonic Adventure 2's story beats and broad narrative brushstrokes, one of the key differences involves the character of Gerald Robotnik (Jim Carrey).

In Sonic the Hedgehog 3, Sonic (Ben Schwartz), Tails (Colleen O’Shaughnessey), and Knuckles (Idris Elba) find ... Robotnik has a surprise meeting with his long-lost grandfather Professor Gerald ...

As in the first two Sonic movies, Carrey plays the role of Ivo Robotnik, the central antagonist from the Sega video games, but he also plays Gerald Robotnik, Ivo’s long lost grandfather ...

Jim Carrey returns as the maniacal Dr. Robotnik in Sonic the Hedgehog 3 ... Character Poster Sonic the Hedgehog 3 - Jim Carrey - Gerald Robotnik Character Poster Sonic the Hedgehog 3 - Natasha ...

Jim Carrey is open to reprising his role as Dr. Robotnik in the Sonic movie universe, although hasn't confirmed anything at this point.