The first teaser for Sonic the Hedgehog 4, released on March 19, 2026, confirms Jim Carrey's return as Doctor Eggman despite his apparent death in Sonic the Hedgehog 3. It features a voiceover referencing chaos and shows the Chaos Emeralds with flashes of characters including Amy, Tails, Knuckles, Shadow, Maddie, and Tom. The film arrives in theaters on March 19, 2027.
On March 19, 2026, Paramount released the first teaser for Sonic the Hedgehog 4. The trailer includes a voiceover from Jim Carrey as Doctor Eggman: “You think your world is safe, but your time is about to run out. The chaos has only just begun.” As he speaks, the Chaos Emeralds appear on screen, each containing brief flashes of characters such as Amy Rose, Tails, Knuckles, Sonic's human parents Maddie and Tom, and Shadow, with Keanu Reeves confirmed to reprise his role as Shadow. Returning characters also include Sonic, Tails, Knuckles, and some version of Doctor Eggman. Kristen Bell voices newcomer Amy Rose, who makes a proper debut after appearing in Sonic the Hedgehog 3's post-credits scene, alongside Metal Sonic. New cast members Matt Berry, Ben Kingsley, and Nick Offerman join in undisclosed roles. The Sonic the Hedgehog Twitter account posted messages hinting at chaos, including “let the chaos begin 🌀,” “it's about to get CHAOTIC,” “the chaos has only just begun 💎,” and “excitement level: CHAOS.” Fans theorize the references to “chaos” and a whirlpool emoji may nod to the Sonic Adventure villain Chaos, an aquatic creature powered by Chaos Emeralds that mutates into larger forms. Rumors suggest the film may partially occur in an alternate timeline where Eggman has conquered the world, explaining Amy's origins and Eggman's survival and antagonism after his sacrifice in Sonic the Hedgehog 3. Sonic the Hedgehog 4 is scheduled for theaters on March 19, 2027.
