Jim Carrey
Ivo Robotnik / Gerald Robotnik
Ben Schwartz
Sonic (voice)
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)
Brian Murphy
Gerald Robotnik (uncredited)
