Ben Schwartz

Sonic (voice)

Jim Carrey

Ivo Robotnik / Gerald Robotnik

Keanu Reeves

Shadow (voice)

Idris Elba

Knuckles (voice)

Colleen O'Shaughnessey

Tails (voice)

James Marsden

Tom

Tika Sumpter

Maddie

Lee Majdoub

Agent Stone

Krysten Ritter

Director Rockwell

Adam Pally

Wade

Natasha Rothwell

Rachel

Shemar Moore

Randall

Alyla Browne

Maria

Tom Butler

Commander Walters

Jorma Taccone

Kyle Lancebottom

Sofia Pernas

Gabriella

Cristo Fernández

Pablo / Juan

James Wolk

Young Walters

Brett Tutor

Prison Guard

Richard Sutton

G.U.N. HQ Security Guard

Will Austin

G.U.N. Heli Pilot

Bola Okun

Military Man

Reggie Banigo

Rockwell's Assistant

Barry Calvert

70s G.U.N. Soldier

Brendan Murphy

Robotnik Proxy

Toru Nakahara

Japanese News Reporter (voice)

Mariko Nishino

Japanese Chao Waitress