David
Ralphie
Jerry
Lex Luthor
Marcel
Columbus
Tom
Vincent Zaleski
Lex Luthor (uncredited)
J. Daniel Atlas
Bobby Dorfman
Lex Luthor
Jonah Reed
Mike Howell
David Lipsky
Josh Stamos
Simon James / James Simon
Blu (voice)
J. Daniel Atlas
Jesse Eisenberg
Eric Dobbs
Nick Davis
Blu (voice)
Himself/Mark Zuckerberg
Himself
Mark Zuckerberg
Daniel
Sam Gold
Lt. Fiske Hanley / Sgt. Benjamin McKinney
Columbus
Cheston
The Boy
James Brennan
Benjamin
Mills
Charlie Banks
Walt Berkman
Jimmy
Jamison
Louis Masoudi
Nick
Eric Dobbs
J. Daniel Atlas