- Primary Subject: Sonic the Hedgehog 4
- Key Update: Kristen Bell has officially joined the cast to voice Amy Rose.
- Status: Confirmed
- Last Verified: February 19, 2026
- Quick Answer: Sonic the Hedgehog 4 is officially in development, starring Kristen Bell as Amy Rose, with a scheduled theatrical release date of March 19, 2027.
Kristen Bell has officially joined the cast of Sonic the Hedgehog 4 as the voice of Amy Rose, adding to the video game movie franchise’s growing roster of A-list stars.
With this latest casting news, fans are even more excited to see the beloved blue speedster return to the big screen.
So, from its highly anticipated release date to what to expect from the storyline, here’s everything you need to know about Sonic 4.
What Is Sonic the Hedgehog 4 About?
While the official synopsis for Sonic the Hedgehog 4 hasn’t been released yet, several fan theories have emerged about what the new installment might be about.
Sonic the Hedgehog 3 ended with Team Sonic, Sonic (Ben Schwartz), Tails (Colleen O'Shaughnessey), Knuckles (Idris Elba), Tom (James Marsden), and Maddie (Tika Sumpter), surviving the Eclipse Cannon explosion, while Robotnik seemingly perished.
The mid-credits scene teased the arrival of Amy Rose and a legion of Metal Sonics, while the post-credits scene revealed Shadow (Keanu Reeves) was alive, hinted at by his signature golden wrist cuff.
Based on these events, Sonic 4 may focus on Sonic’s battle against the mechanical army. Amy Rose appears to be an ally, and Shadow could join forces with Sonic after initially acting as a villain, helping him save the world.
As for Robotnik (Jim Carrey), leaked concept art from Sonic 3 suggests possible storylines involving a parallel universe or time travel. Another image even showed Metal Sonic alongside Emperor Eggman, hinting at potential plot threads that Sonic 4 might explore.
Who Is in the Cast of Sonic the Hedgehog 4?
New characters continue to be introduced with every installment of the Sonic the Hedgehog movie series, and this time, Kristen Bell has officially been announced as the voice of Amy Rose.
Of course, Ben Schwartz returns as Sonic, alongside Colleen O'Shaughnessey as Tails and Idris Elba as Knuckles.
In addition, with Shadow surviving the Eclipse Cannon explosion, Keanu Reeves is expected to reprise his role as Shadow.
There are also theories that Jim Carrey may return as the villainous Dr. Ivo Robotnik, despite the character seemingly not surviving the explosion and the actor previously announcing his retirement after Sonic the Hedgehog 2.
However, Carrey ultimately returned for Sonic the Hedgehog 3, and with insiders claiming that Paramount is actively pursuing his comeback, it seems increasingly likely that he could appear once again as the iconic antagonist.
As for the human characters, James Marsden and Tika Sumpter are also expected to reprise their roles as Tom Wachowski and Maddie Wachowski, continuing to support their superpowered friends.
When Will Sonic the Hedgehog 4 Be Released?
Shortly after the release of Sonic the Hedgehog 3, Paramount officially greenlit Sonic the Hedgehog 4.
Now that the fourth installment is deep in development, it has been given a release date of March 19, 2027.
However, a change in schedule is possible, especially since the film is more than a year away from its premiere. Still, with a production timeline similar to its predecessors, Sonic 4 is likely to arrive on time.
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