Original Villains that were considered to appear in the film were Blind Justice, The Sherriff, and Dr. Hazard.
An idea that was considered, was a parallel 1960s flashback story about Young Craig Hargroves on his first case, fighting the Dream Weaver, and Matthew Greene would have done double duty playing both Dream Weaver and the Eye Snatcher.
Mihran Konanyan, Matthew Greene, Linden Chiles, Vivian Brasch, and Arsha Darbinyan are the only actors to have appeared in all three Adam Sera films, but Mihran Konanyan, Linden Chiles, and Arsha Darbinyan are the only actors to portray their original characters throughout the complete trilogy.
Ansel Faraj was originally going to cameo as Officer Dave Barnes in the film, and the character appears briefly in the script, though he has no lines. The cameo was deemed unnecessary and the character will not appear.
Seth Lovett was initially considered to play a villain named The Phantom, who in the Adam Sera Mythos is a master of disguise.