Jim Carrey

Ivo Robotnik / Gerald Robotnik

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

Shemar Moore

Randall

Natasha Rothwell

Rachel

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