The only details accompanying the announcement were a GIF of Sonic, Knuckles, and Tails, along with the words “Running faster, flying higher, and punching harder.” With how loyal and expansive the fanbase surrounding the Sonic The Hedgehog characters has become over the time that the characters have been around, it came as no surprise back in February when Sonic 3 was given the green light from Paramount Pictures.
— Sonic the Hedgehog (@SonicMovie) August 9, 2022 Given how far away the movie’s release is, speculating on the plot detail seems entirely fruitless right now. However, with Shadow’s appearance in the Sonic 2 post-credits scene, it would not be too wild to assume that he could be the main antagonist of the movie. Storywriters Pat Casey and Josh Miller have also confirmed that they will be using the video games “Sonic The Hedgehog 2” and “Shadow The Hedgehog” as inspirations for the storyline of the upcoming sequel. This came from an interview back in May where they said it isn’t “revealing anything” to admit that they were taking inspiration from the games.
On the other hand, details like the movie’s cast are easily determined. A return from Sonic (Ben Schwartz), Tails (Colleen O’Shaughnessey), and Knuckles (Idris Elba) are almost guaranteed to happen. The same holds true for the humans that are featured in the movie. James Mardsen will be returning as Tom Wachowski, and Jim Carrey is expected to return for the role of Dr. Robotnik. Sonic The Hedgehog 3 is scheduled to hit theaters on 20th December 2024, just in time to kick off the holiday season that year.