Peter Scolari

as Billy / Lonely Boy

as Dr. Dennis Barkley

as Commissioner Loeb

as Limo Driver / Peter Scolari (voice)

as Hamner (voice)

as Zimmer the Keymaster

as Leslie Tilbert

as Ringmaster

as Bishop Thomas Marx

as Doug LeSham (voice)

as Kyle Evans

as Troy Chesterfield

as Wilford Wolf (voice)

as Ron

as Professor Higginson (voice)

as Jake Kimball

as Stuart Hofferman

as Preston Vogel (voice)

as Tad Horvath

as Hooley

as Greg

as Ray Palmer/The Atom (voice)

as Louis

as Paul Kenter

as Paul

as Leonard Randall / Delos of Atlantis

as Wellington Davis Rothmeyer

as Charles Danson

as Charles Hibbard

as Councilman Kemp

as Donald Himmel

as Mickey Lamm

as Seminary Teacher

as Henry Desmond / Hildegard Desmond (archive footage)

as Albie Fervitz

as Dave Debusher

as Pete Conrad

as Parker Reynolds

as Brad (voice)

as Mel

as Dad

as Patrick

as Edwin Hadley

as Michael Harris

as Professor William Fagen Higginson (voice)

as Wayne Szalinski

as Henry Desmond / Hildegarde

as Peter Madoff

as David Day

as Self

as Phil

as Pete Conrad

as Clerk

as Agent Hardigan

as Self

as David Katz

as Derek Sanders

as Elliot

as Fred

as Self - Judge

as Kookie ("1950's")

as Paul DeWitt

as Dr. Zach Drummond

as Andrew McKillop

as Bill

as Simon Tanner

as Woody

as Jonathan Parks

as Ted Caton

as Johnny Lake

as Dr. Jerry Menzies

as Date #2 (uncredited)

as Ken Ballantine

as Robert Duff

as Chris Robinson

as Mr. Bill

as Dr. Zukreski

as Howard Grant

as Stephen Schpelnick

as Benny Loman

as Colin

as Littlechap

as Self

as Warren Mosbey

as Self

as Bob

as Father Mike McGary