Ashika Ranganath Mark Zuckerberg Erica Beck Eduardo Saverin Vajja Venkata Giridhar Cameron Winklevoss / Tyler Winklevoss Mel Brooks Sean Parker Michela Cescon Divya Narendra Ivan Franěk Tyler Winklevoss Giulia Bertinelli Christy Lee Giorgia Sinicorni Marylin Delpy Kang Seo-ha Sy Federica Vincenti Gage Pierpaolo Lovino Gretchen Simone Castano Larry Summers Yohann Chopin Erica Albright Vincenzo Failla Billy Olsen Christiane Grass Phoenix Club President Bruce Willis Dustin Moskovitz Cristian Di Sante Chris Hughes Dakota Fanning Phoenix Member Playing Facemash Mary McCormack Girl at Phoenix Club Rachel Blanchard Student Playing Facemash Devyn Nekoda Student Playing Facemash Jessica Catalano Ad Board Chairwoman Joanne Popolin CS Lab Professor Savita Prabhune Amelia Ritter Valerie LaPointe Sharon O-T Fagbenle Prince Albert Caroll Spinney Maurice Boloram Das Fraternity Guy Jamie Wolpert Student (uncredited) Beena Banerjee Regatta Spectator (uncredited) Jon Bernthal Frank Castle Deborah Ann Woll Karen Page Jason R. Moore Curtis Hoyle Judith Light Ma Kelli Barrett Maria Castle Andre Royo Dre John Douglas Thompson Old Vet Nick Koumalatsos Nick Koumalatsos Mila Jaymes Charli Mugga Debbie Dónall Ó Héalai Mickey Evelyn O. Vaccaro Isaiah's Mother Roe Rancell Dennis Annika Pergament Annika Pergament Jesse Ray Sheps Adnan Meltem Gulturk Mother Dominick Mancino Benny Gnucci Joseph DeVito Bobby Gnucci Chelsea Brea Woman David Collins TV Newscaster