Jim Carrey
Ivo Robotnik / Gerald Robotnik
Ben Schwartz
Sonic (voice)
Keanu Reeves
Shadow (voice)
Idris Elba
Knuckles (voice)
Colleen O'Shaughnessey
Tails (voice)
Krysten Ritter
Director Rockwell
Tom Butler
Commander Walters
Jorma Taccone
Kyle Lancebottom
Cristo Fernández
Pablo / Juan
Richard Sutton
G.U.N. HQ Security Guard
Will Austin
G.U.N. Heli Pilot
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)
