Sonic the Hedgehog 4 Complete Cast Revealed — Keanu, Kristen Bell, Ben Kingsley & More Confirmed for 2027

The blue blur is back — and he’s bringing some serious star power with him. Paramount has officially unveiled the full cast for Sonic the Hedgehog 4, and honestly, it might be the most stacked lineup in the franchise’s history. Here’s everything you need to know about who’s voicing who ahead of the March 19, 2027 release

Sonic the Hedgehog 4: Facts

Returning Cast — The Gang’s All Here

Ben Schwartz returns as Sonic, Idris Elba reprises his fan-favourite role as Knuckles, and Keanu Reeves is back as the brooding Shadow. Wikipedia The human side of the story continues too — James Marsden returns as Tom Wachowski, Sonic’s adoptive dad and sheriff of Green Hills, alongside Tika Sumpter as Maddie, and Lee Majdoub as the ever-loyal Agent Stone. And yes — Jim Carrey is back as the mad genius Dr. Ivo Robotnik , defying all those retirement rumours.

Colleen O’Shaughnessey also reprises her beloved role as Tails — a rare case of a video game voice actress carrying over into a major Hollywood production, and fans couldn’t be happier about it.

New Cast — Fresh Faces Enter the Sonic Universe

Kristen Bell joins as Amy Rose, the pink hedgehog with a major crush on Sonic — a hugely significant addition given Amy’s importance in the game lore. IMDb Best known as Anna in Frozen and Eleanor in The Good Place, Bell is a natural fit.

Also new to the franchise are Sir Ben Kingsley, and comedy legends Matt Berry (What We Do In The Shadows), Nick Offerman (Parks and Recreation), and Richard Ayoade (The IT Crowd). The Cinemaholic Kingsley and Offerman are confirmed to be voicing characters — suggesting anthropomorphic or robotic roles rather than humans. Fandom The roles of Berry and Ayoade remain under wraps, though fan speculation is already running wild.

The Parks and Recreation reunion between Ben Schwartz and Nick Offerman is already generating buzz — and it’s the kind of meta casting that the Sonic franchise does brilliantly.

What’s the Plot?

The film draws inspiration from the 1993 video game Sonic CD, which marks the debut of both Amy Rose and Metal Sonic. Director Jeff Fowler confirmed the connection honours the source material’s chronology, though the story won’t be a direct adaptation. Expect Metal Sonic to play a role — whether he’ll have a voice actor is still unknown.

For more film and gaming news, check out our latest Hollywood and gaming coverage on Technosports, and don’t miss our Sonic the Hedgehog franchise recap on Technosports to catch up before 2027.

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