Simon Pegg
as Graeme Willy

Nick Frost
as Clive Gollings

Seth Rogen
as Paul (voice)

Jason Bateman
as Special Agent Lorenzo Zoil

Kristen Wiig
as Ruth Buggs

Bill Hader
as Haggard

Blythe Danner
as Tara Walton

Joe Lo Truglio
as O'Reilly

John Carroll Lynch
as Moses Buggs

Jane Lynch
as Pat Stevenson

David Koechner
as Gus

Jesse Plemons
as Jake

Sigourney Weaver
as The Big Guy

Jeffrey Tambor
as Adam Shadowchild

Steven Spielberg
as Self

Mia Stallard
as Young Tara

Bobby Lee
as Valet

Jennifer Granger
as Adam Shadowchild Fan

Jeremy Owen
as Sword Vendor

David House
as Security Guard

Nelson Ascencio
as Jorge

Mark Sivertsen
as State Trooper

Joe Berryman
as Gas Station Attendant

Syd Masters
as Band Member #1

Gary Roller
as Band Member #2

Oliver O'Shea
as Band Member #3

Lonnie Otha-Mayer
as Band Member #4

Will Veitch
as Band Member #5

Mike Miller
as Police Officer

Lori Dillen
as Robed Woman

J. Todd Anderson
as Comic Store Clerk

Brett Michael Jones
as Keith Nash

Diego Deane
as Fireworks Store Clerk

Joel Thingvall
as Comic Book Dealer (uncredited)

Robert Amstler
as Comic Con Conan (uncredited)

Dawn Barber
as Sailor Moon (uncredited)

Chad Boardsen
as Snake Plissken Cosplay (uncredited)

Devin Faraci
as Comic Con Nerd (uncredited)

David Fernandez Jr.
as Comic Con (uncredited)

Larry Goldstein
as Comic-Con Chewbacca (uncredited)

Zack Kennedy
as Comic Con Nerd (uncredited)

Chris Kittinger
as Bar Patron (uncredited)

Jeremiah Krage
as Baker (uncredited)

Paula LaBaredas
as Princess Leia (uncredited)

Sylvia Adelina Padilla
as Felix the Cat (uncredited)

Michael Neal Powell
as Bartender (uncredited)

Phoebe Price
as Princess Lea (uncredited)

Chris Rymer
as Comic Con Clone Trooper (uncredited)

Joy Sudduth
as Angry Stage Manager (uncredited)

Brian Ulrich
as Gray Uglydoll (uncredited)