Haley Joel Osment:David;Frances O'Connor:Monica Swinton;Sam Robards:Henry Swinton;Jake Thomas:Martin Swinton;Jude Law:Gigolo Joe;William Hurt:Prof. Hobby;Robin Williams:Dr. Know (voice);Ben Kingsley:Specialist (voice);Meryl Streep:Blue Mecha (voice);Chris Rock:Comedian (voice);Ken Leung:Syatyoo-Sama;Clark Gregg:Supernerd;Kevin Sussman:Supernerd;Tom Gallop:Supernerd;Eugene Osment:Supernerd;April Grace:Female Colleague;Matt Winston:Executive;Sabrina Grdevich:Sheila;Theo Greenly:Todd;Michael Mantell:Dr. Frazier at Cryogenic Institute;Keith Campbell:Roadworker;Brian Turk:Backstage Bull;Brendan Gleeson:Lord Johnson-Johnson;Christopher Dye:Flesh Fair Participant;Jack Angel:Teddy (voice);Tim Rigby:Yeoman;Enrico Colantoni:The Murderer;Adrian Grenier:Teen in Van;Matt Malloy:Robot Repairman;Brent Sexton:Russell;Erik Bauersfeld:Gardener (Voice);Michael Fishman:Teen in Van;Diane Fletcher:Sentient Machine Security;Al Jourgensen:Flesh Fair Band Member;Paul Barker:Flesh Fair Band Member;Vito Carenzo:Big Man;Adam Grossman:Flesh Fair Band Member;Rena Owen:Ticket Taker;Adam Alexi-Malle:Crowd Member;Laurence Mason:Tech Director;Ashley Scott:Gigolo Jane;Ty Coon:Flesh Fair Band Member;Duane Buford:Flesh Fair Band Member;Max Brody:Flesh Fair Band Member;Red King:Covert Information Retrieval;Claude Gilbert:Cybertronics - Room 93056;Kate Nei:Toe Bell Ringing;Laia Salla:Mr. Chan's Assistant;Jeanine Salla:Sentient Machine Therapist;Mark Allan Staubach:Teen in Van;Miguel Pérez:Robot Repairman;Billy Scudder:Mechanic;Bobby Harwell:TV Face;Wayne Wilderson:Comedian;R. David Smith:Welder;Eliza Coleman:General Circuita;Jim Jansen:Chef;Tim Rhoze:Laboratory Technician;Clara Bellar:FemMecha Nanny;Kelly McCool:Kate the Holographic Girl;Michael Shamus Wiles:Cop;Jason Sutter:Percussionist;Ken Palmer:Percussionist;Alan Scott:Worker;Lily Knight:Voice in the Crowd (voice);Justina Machado:Assistant;Daveigh Chase:Child Singer (scenes deleted);Kathryn Morris:Teenage Honey;Hunter King:Amanda;Michael Berresse:Stage Manager;Paula Malcomson:Patricia in Mirrored Room;John Prosky:Mr. Williamson, the Bellman;Curt Youngberg:Kid;Andy Morrow:Kid;Dillon McEwin:Kid;Jeremy James Kissner:Kid