Sonic the Hedgehog 4 is an upcoming American action-adventure comedy film based on the Sonic video game series. The fourth in the Sonic film series, it is scheduled to be released in the United States on March 19, 2027.
It is expected that Amy Rose and Metal Sonic, who both appeared in the mid-credits scene of the previous film, will appear in this film. While nothing has yet been officially disclosed about the film's story, fans and journalists have widely speculated that it will take inspiration from Sonic CD, which served as the introduction of both characters to the video game series. In January 2025, Carrey expressed interest in returning as Robotnik if the film's premise interested him.