Idris Elba
Knuckles the Echidna (voice)

Adam Pally
Wade Whipple

Stockard Channing
Wendy Whipple

Alice Tregonning
Susie Barnes

Jaimi Barbakoff
Susie's Mom

Fergus Craig
Susie's Dad

Edi Patterson
Wanda Whipple

Rory McCann
The Buyer

Kid Cudi
Agent Mason

Ellie Taylor
Agent Willoughby

Julian Barratt
Jack Sinclair

Christopher Lloyd
Chief Pachacamac (voice)

Cary Elwes
'Pistol' Pete Whipple

Paul Scheer
Gary Saint Claire III Esq.

Rob Huebel
Dylan Beagleton

Owen Warren
Pete's Bowling Partner

Colleen O'Shaughnessey
Miles 'Tails' Prower (voice)

Ben Schwartz
Sonic the Hedgehog (voice)

Tika Sumpter
Maddie Wachowski

Tony Coughlan
Welder Worker