Jay Baruchel as Dave Stutler

Nicolas Cage as Balthazar Blake

Alfred Molina as Maxim Horvath

Teresa Palmer as Becky Barnes

Toby Kebbell as Drake Stone

Omar Benson Miller as Bennet

Monica Bellucci as Veronica Gorloisen

Jake Cherry as Young Dave

Alice Krige as Morgana le Fay

James A. Stephens as Merlin

Gregory Woo as Sun-Lok

Wai Ching Ho as Chinese Woman

Jason R. Moore as Subway Mugger

Robert Capron as Young Dave's Pal

Peyton List as Young Becky

Sándor Técsy as Russian Man

Marika Daciuk as Russian Woman

Nicole Ehinger as Abigail Williams

Adriane Lenox as Ms. Algar

Ethan Peck as Andre

Manish Dayal as NYU Clerk

Oscar A. Colon as Fry Cook

Joe Lisi as Police Captain

Victor Cruz as Auto Impound Clerk

Melissa Gallagher as Woman on the Street

Parisa Fitz-Henley as Bennet's Girlfriend

Brandon Gill as Student in Bathroom

Henry Yuk as Chinese Dragon Carrier

Jordan Johnston as Mean Kid

Izuchukwu Mozie as African Boy

Amit Soni as Indian Boy

Maha Chehlaoui as Hot Girl

Adria Baratta as Student #1

Rosie Moss as Student #2

Ian Alda as Physics Student

Ian McShane as Narrator (voice) (uncredited)

William Devlin as Police Officer

Billy Anastasiou as NYC Pedestrian (uncredited)

John Farrer as Hotel Doorman (uncredited)