Sarge
John "Reaper" Grimm
Samantha Grimm
Destroyer
Duke
The Kid
Goat
Portman
Pinky
Dr. Carmack Imp / Sewer Imp
Hell Knight
Mac
Dr. Carmack
Lt. Huengs
Sanford Crosby
Dr. Jenna Willits
Dr. Hillary Tallman / Imp
Dr. Steve Willits
Dr. Thurman
Dr. Clay
Dr. Olsen
Security Guard (uncredited)
Girl at Bar (uncredited)
Dead Scientist Shot (uncredited)
Female Evacuatee
(uncredited)