Warning: Possible SPOILERS ahead for Sonic the Hedgehog 3!Sonic the Hedgehog 3 could include this surprise character after a theater merchandise reveal, possibly confirming another familiar face from the franchise will arrive in the movie. The cast of Sonic the Hedgehog 3 will feature a whopping seven characters from the original games, those being Sonic (Ben Schwartz), Dr. Robotnik (Jim Carrey), Tails (Colleen O’Shaughnessey), Knuckles (Idris Elba), Shadow (Keanu Reeves), Gerald Robotnik (Carrey), and Maria (Alyla Browne). However, director Jeff Fowler confirmed the appearance of new characters in the movie, teasing what the sequel is going to be about.

https://screenrant.com/sonic-the-hedgehog-3-movie-cream-character-reveal/