Scott Adsit as Baymax (voice)

Ryan Potter as Hiro Hamada (voice)

Daniel Henney as Tadashi Hamada (voice)

T.J. Miller as Fred (voice)

Jamie Chung as GoGo Tomago (voice)

Damon Wayans Jr. as Wasabi (voice)

Genesis Rodriguez as Honey Lemon (voice)

James Cromwell as Professor Robert Callaghan (voice)

Alan Tudyk as Alistair Krei (voice)

Maya Rudolph as Aunt Cass (voice)

Abraham Benrubi as General (voice)

Katie Lowes as Abigail (voice)

Billy Bush as Newscaster (voice)

Daniel Gerson as Desk Sergeant (voice)

Paul Briggs as Yama (voice)

Charlie Adler as Yokai (voice)

Marcella Lentz-Pope as Additional Voices (voice)

David Shaughnessy as Heathcliff (voice)

Cam Clarke as Additional Voice (voice)

Nicholas Guest as Additional Voice (voice)

Terri Douglas as Additional Voice (voice)

Tim Mertens as Additional Voice (voice)

Yuri Lowenthal as Additional Voice (voice)

Sundra Oakley as Additional Voice (voice)

Brian R. Norris as Additional Voice (voice)

Stan Lee as Fred's Dad (voice)

Shane Sweet as Additional Voice (voice)

Frank Welker as Mochi (voice) (uncredited)

David Cowgill as Additional Voice (voice)

Kirk Baily as Additional Voice (voice)

Charlotte Gulezian as Ringleader (voice)

Reed Buck as Additional Voice (voice)

Roy Conli as Additional Voice (voice)

Cooper Cowgill as Additional Voice (voice)

Jackie Gonneau as Additional Voice (voice)

Marlie Crisafulli as Additional Voice (voice)

Bridget Hoffman as Additional Voice (voice)

Kelly Hoover as Additional Voice (voice)

Leah Latham as Additional Voice (voice)

James Taku Leung as Additional Voice (voice)

Yumi Mizui as Additional Voice (voice)

Michael Powers as Additional Voice (voice)

Lynwood Robinson as Additional Voice (voice)

Josie Trinidad as Additional Voice (voice)

Daniel Howell as Male Technician #1 (voice) (uncredited)

June Christopher as Additional Voices (voice)

Phil Lester as Male Technician #1 (voice) (uncredited)