Tom Everett Scott

as David

as Mr. Down

as Greg Sullivan

as Rosen

as Elliot Grebb (uncredited)

as Henry Baskerville

as Matheson

as Andrew Crawford

as Kevin Duval

as Adam Fisher

as Rob Sobiech

as Charles Garnett

as Eric Wyczenski

as Guy Patterson

as Booster Gold (voice)

as Milo's Dad (voice)

as Andy McDermott

as Michael Brantley

as Charles Wilson

as Jason

as Alex

as Frank Heffley

as Phil Simmons

as Ronald Odom

as Buddy (voice)

as Jim

as Buddy (voice)

as Booster Gold (voice)

as Montgomery Rush

as Detective Russell Clarke

as Paul

as Henry

as Josh Miller

as Self - Guest

as Brian Gulden

as Gio

as Santa Paws (voice)

as Michael

as Garrett

as Wyatt Woods

as Sam Garsette

as Johnny

as Brad Mercer

as Mike

as Jonathan

as Nick Pearson

as Joe Matthews / Micah Matthias

as Dean

as Damon

as Chief Barton Brady

as Bertram Cates

as Andrew Remington

as Matthew

as Ethan

as Adam

as Martin MacNeill

as Charlie (voice)

as Guy Fawkes

as Benedict Stone

as Parker Kincaid

as Adam

as Fred

as Self - Guest

as Charlie (voice)

as Todd

as Allen Karroll

as Joel

as John Arable (voice)

as Jack T. Kenderson

as Peter

as Will Froman

as Sam

as Self

as Martin

as Matt Hansen

as Self (archive footage)

as Wyatt Cole

as Dave Holden

as Jesse Rockbottom

as Liam

as Dr. Baxter

as Self