John F. Donovan
Kit Harington
Sam Turner
Natalie Portman
Rupert Turner
Jacob Tremblay
Grace Donovan
Susan Sarandon
Adult Rupert Turner
Ben Schnetzer
Kit Harrington
Barbara Haggermaker
Kathy Bates
Audrey Newhouse
Thandiwe Newton
le narrateur/Man in Diner
Michael Gambon
Mrs. Kureishi
Amara Karan
Jeanette
Bella Thorne
Will Jefford Jr.
Chris Zylka
James Donovan
Jared Keeso
Amy Bosworth
Emily Hampshire
Liz Jones
Sarah Gadon
Aunt Anne
Jane Wheeler
Eric
Dakota Jamal Wellman
Uncle Patrick
Craig Eldridge
Aunt Faith
Susan Almgren
Cedric James
Lukas Rolfe
Big Billy
Ari Millen
Bonnie
Leni Parker
Rupert's Boyfriend
Gijs Blom
Trish
Katy Breier
Adam's Mother
Ellen David
News Anchor
Anne Mroczkowski
Hellsome High Actress
Alison Louder
Police Officer
James Marchant
Hellsome High Actor
Matthew Raudsepp
Producer
Harry Standjofski
Director
Trevor Hayes
Director #2
Pat Kiely
Journalist #1
Sangita Patel
Editor #1
Brent Skagford
Journalist #2
Hamza Haq
Cashier
Allan Michael Brunet
Porter
Carolyn Fe
Sasha
Connor McMahon
Late Night Show Host
Rob Baker
Editor #2
Michael Daniel Murphy
Journalist #2
Holly Bernier
Security Guard
Niko Nikolov
Club Boy #1
Patrick Allard
Fan in the Club
Pierre-Luc Lafontaine