Casting for this film is a 2-part process. Pete, the director, casts actors to play the spectators / victims, while Mar Omega, the creator of SoP, casts real sideshow performers to play the troupe of murderous psychopaths. All of the sideshow stunts in this film are real, and regularly performed before live audiences around North America.
In 2017, comic book artist / sideshow performer, Mar Omega wrote and drew a comic book prequel to the Sideshow Of Psychosis film. Issue #0 features Easter eggs of a rudimentary Augmented Reality nature. Those special features give the reader access to content of all of the sideshow performers who lenses their characters to the film.