Reparto:
Ben Schwartz - Sonic the Hedgehog (voice)
James Marsden - Tom Wachowski
Jim Carrey - Dr. Robotnik
Tika Sumpter - Maddie Wachowski
Natasha Rothwell - Rachel
Adam Pally - Wade Whipple
Lee Majdoub - Agent Stone
Neal McDonough - Major Bennington
Tom Butler - Vice Chairman Walters
Frank C. Turner - Crazy Carl
Benjamin Valic - Baby Sonic (voice) (as Benjamin L. Valic)
Donna Jay Fulks - Longclaw (voice)
Colleen O'Shaughnessey - Tails (voice)
Shannon Chan-Kent - Roadhouse Waitress
Garry Chalk - Navy Chief of Staff
Melody Nosipho Niemann - Jojo (as Melody Niemann)
Brad Kelly - Roadhouse Thug
Elfina Luk - Secretary of Homeland Security
Michael Hogan - Air Force Chief of Staff
Peter Bryant - Army Chief of Staff
Jeremy Arnold - Businessman
Jeanie Cloutier - Businesswoman
Emma Oliver - Parisian Little Kid
Charles Heffernan - Mime
Bailey Skodje - Minivan Kid
Dean Petriw - Minivan Kid
Jeff Sanca - Minivan Dad (as Jeffrey Sanca)
Lisa Chandler - Minivan Mom
Chris Gailus - News Anchor
Bethel Lee - Receptionist
Anthony Santiago - Senior Glass Installer
Jeremiah Oh - Junior Glass Installer
Terence Kelly - Farmer Zimmer
Sean Campbell - Bartender
Scott Patey - Bar Patron / On Set Sonic
Sandy Robson - Bar Patron
Andrea Marcum - Yoga Instructor
Nicholas Dohy - Tough Bar Patron (uncredited)
Debs Howard - New Girlfriend (uncredited)
Robert Jenner - Random Person (uncredited)
Leanne Lapp - Tissue Girl (uncredited)
Richard David Lecoin - Military Soldier (uncredited)
Nadeen Lightbody - Robotnik Agent (uncredited)
Steve Warky Nunez - Driver (uncredited)
John Specogna - Rowdy Bar Folk Member (uncredited)
Breanna Watkins - Line Dancer (uncredited)