The fastest franchise in Hollywood isn’t slowing down. Following the massive global success of the third installment, Paramount Pictures has officially moved into the next phase of the Blue Blur’s cinematic journey. Director Jeff Fowler took to Twitter today to confirm that production on Sonic the Hedgehog 4 has officially begun.
Fowler’s post featured a “Ready 4 Action” teaser image from the set, showing him holding a high-fidelity physical prop of Amy Rose’s Piko Piko Hammer against a backdrop of massive blue screens.
The Pink Hedgehog is Here: Kristen Bell Joins the Cast

The production start comes just weeks after the industry-shaking announcement that Kristen Bell (The Good Place, Frozen) has officially signed on to voice Amy Rose, who first appeared in a mid-credit scene in Sonic the Hedgehog 3.
The casting was first teased on IG by Ben Schwartz, where he posted a photo of the two actors holding their respective character figurines. Bell’s inclusion marks a major win for the franchise, bringing a voice-acting powerhouse to one of the most beloved characters in the Sonic lore.
The Rumor Mill: Metal Sonic, Time Travel, and “Sonic CD”
While Paramount is keeping the script under lock and key, the start of production has reignited a frenzy of rumors. Here’s a recap of what fans are expecting from the fourth installment in the franchise.
Many fans believe the fourth film will take heavy inspiration from the classic game Sonic CD, a theory bolstered by the fact that both Amy Rose and Metal Sonic debuted in that title. Rumors from reliable insiders suggest the plot revolves around a “Bad Future” scenario, that finds Sonic traveling through time to stop a world ruled by Dr. Robotnik’s automated army.
While Amy is the focus now, fans are already hunting for clues about Silver the Hedgehog. Rumors suggest he may not appear in the main film but is a prime candidate for the inevitable post-credits stinger for the film, which is set to release March 19, 2027.








