Kaboom

Thomas Dekker

Smith

Haley Bennett

Stella

Chris Zylka

Thor

Roxane Mesquida

Lorelei

Juno Temple

London

James Duval

The Messiah

Andy Fischer-Price

Rex

Brandy Futch

Drug Fairy Nymph (uncredited)

Nicole LaLiberte

Red-Haired Girl

Kelly Lynch

Nicole

Brennan Mejia

Oliver

Carlo Mendez

Milo

Jason Olive

Hunter

Christine Nguyen

Freshman Bimbo

Michael James Spall

Smith's Dad

Sean Bresnahan

Surgeon (uncredited)

Natalie Alyn Lind

Cult Victim (uncredited)

Jen Mears

Student (uncredited)