Mark Hamill as Donald Swan

Donna D'Errico as Liberty Lass / Papaya Smith

Billy West as Leo Matuzik

Lori Alan as Anita Levine

Daran Norris as Commander Courage / Bruce Easly

Bruce Campbell as Bruce Campbell

Kevin Smith as Kevin Smith

Tom Kenny as Derek Sprang

Jill Talley as Jill Sprang

Stan Lee as Stan Lee

Peter Mayhew as Peter Mayhew

David Prowse as David Prowse

Jeremy Bulloch as Jeremy Bulloch

Jonathan Winters as Wally

J.J. Abrams as J.J. Abrams

Steve Ditko as Steve Ditko

Edd Hall as Celebrity Party Host Edd Hall

Roger Rose as Taylor Donohue

Jess Harnell as Ricky

Scott LaRose as Mac (Comic Store Pal #1)

Gary Anthony Williams as Kurt (Comic Store Pal #2)

Arleen Sorkin as Ms. Q (Studio Secretary)

James Arnold Taylor as J.T.

Debi Derryberry as Debby Newman

Jim Cummings as Dr. Cedric Perview

Kevin Michael Richardson as Ice Tray

Tara Strong as Hotel Maid

Gina Gattone as 2nd Liberty Lass

Peter David as Peter David

Ray Harryhausen as Ray Harryhausen

Matt Groening as Matt Groening

Phil Morris as Phil Morris

Chase Masterson as Chase Masterson

Gary Owens as Gary Owens

Greg Nicotero as Greg Nicotero

Beth Hathaway as Beth Hathaway

Paul Dini as Paul Dini

Mark Evanier as Mark Evanier

Bill Mumy as Bill Mumy

Ron Perlman as Ron Perlman

Mike Mignola as Mike Mignola

Laura Nativo as Laura Nativo

Nathan Kane as Nathan Kane

Andy Mangels as Andy Mangels

Mark Teague as Mark Teague

Matt Mariska as Matt Mariska

Nina Kaczorowski as Nina Kaczorowski

Amanda Elliott as Amanda Elliott

Maurice LaMarche as Maurice LaMarche

Rob Paulsen as Voice Actor

Sid Caesar as Old Army Buddy

Hugh Hefner as Hugh Hefner

Craig Crumpton as Convention Attendee

Eric Fell as Comic Fan

Espen Jorgensen as Another Face in the Crowd

Joel Thingvall as Comic Fan (uncredited)

Lloyd Kaufman as Lloyd Kaufman (uncredited)