Tony Gardner, the designer of the Ghostface mask from Scream, and Babyface from the Happy Death Day, created the mask of The Other.
Most of the decorations used on set were borrowed from Six Flags Over Georgia's Fright Fest decorations.
Many of the characters walking around Hell Fest in the beginning are from Netherworld Haunted House in Georgia. Netherworld is in the top ten haunted attractions in the USA.
The cast got together a few days before filming and stayed up all night watching horror movies.
As promotional material for the film, the production team designed a walk thru haunted house experience to be visited by patrons of Six Flags amusement parks located in LA, St. Louis, and Chicago. The house is scheduled to be open on select dates during September 28 - October 31 2018.
Gregory Plotkin: as The Other, sitting in front of the passed out Natalie after the ride breaks down.