Steven Pasquale as Dallas Howard

Reiko Aylesworth as Kelly O'Brien

John Ortiz as Sheriff Eddie Morales

Johnny Lewis as Ricky

Ariel Gade as Molly O'Brien

Kristen Hager as Jesse

Sam Trammell as Tim

Robert Joy as Col. Stevens

David Paetkau as Dale

Ian Whyte as Predator

Tom Woodruff Jr. as Alien

Chelah Horsdal as Darcy

Meshach Peters as Curtis

Matt Ward as Mark

David Hornsby as Drew

Chris William Martin as Deputy Ray

James Chutter as Deputy Joe

Phil Buhler as Deputy

Kevin Haaland as Deputy

Gina Holden as Carrie

Kurt Max Runte as Buddy

Liam James as Sam

Tim Henry as Dr. Lennon

Tom McBeath as Karl

Ty Olsson as Nathan

Anthony Harrison as Ritchie

Lloyd Berry as Homeless Harry

Rekha Sharma as Nurse Helen

Catherine Lough Haggquist as Tina

Victoria Bidewell as Pregnant Sue

Dalias Blake as Lt. Wood

Tim Perez as Mr. Thomas

Rainbow Sun Francks as Earl

Juan Riedinger as Scotty

Val Cole as Broadcaster

Andrew Hedge as Tank Driver

Ryan Robbins as Truck Driver

Curtis Caravaggio as Special Forces Commander

Françoise Yip as Ms. Y

John Wardlow as Homeless Guy

Nesta Chapman as Homeless Lady

Ian Feuer as Additional Predator

Bobby 'Slim' Jones as Additional Predator

Glen Brkich as National Guard

Jay-Lyn Green as Pregnant Woman

Lili Wexu as Pregnant Woman

Adrian Hough as ER Resident Doc

Karen van Blankenstein as ER Doctor #2

Shareeka Epps as Kendra (uncredited)

Michal Suchánek as Nick