Seth Rogen character Paul (voice)
Simon Pegg character Graeme Willy
Nick Frost character Clive Gollings
Jason Bateman character Special Agent Lorenzo Zoil
Kristen Wiig character Ruth Buggs
Bill Hader character Haggard
Blythe Danner character Tara Walton
Joe Lo Truglio character O'Reilly
John Carroll Lynch character Moses Buggs
Jane Lynch character Pat Stevenson
David Koechner character Gus
Jesse Plemons character Jake
Sigourney Weaver character The Big Guy
Jeffrey Tambor character Adam Shadowchild
Steven Spielberg character Himself
Mia Stallard character Young Tara
Bobby Lee character Valet
Jennifer Granger character Adam Shadowchild Fan
Joel Thingvall character Comic Book Dealer (uncredited)