Gabriel Sunday as Archibald Holden Buster Williams

David Carradine as Vargas

Mariel Hemingway as Charlotte Silver

Joe Mantegna as Dr. Chandrasakar

Brooke Nevin as Sierra Silver

Nora Dunn as Gretchen Williams

Michael Welch as Earl

Sandy Martin as Mrs. Ellis

Vanessa Lengies as Mallory

Tony Hale as Carmelo Peters - LCSW

Dree Hemingway as Christian Girl #2

Zachary Ray Sherman as Corey

Tim Halligan as Coleman Silver

Robert Kurcz as Daryl Williams

Steven Anthony Lawrence as Brainiac

Harry Shearer as Caress Moscowitz

Kurtis Bedford as Mr. Bedford

Amanda Thorp as Bog Lover Penelope

Stephen Sowan as Stoner #1

Wes Robinson as Stoner #2

Jolene Adams as Corey's Mom

Hana Hatae as Coke Girl

Brittney Bomann as Party Girl