For his zombie cameo, Alex Wesley used paint to create the look of undead skin. As for the unusual eyes, they were not contact lenses nor was it intended. Some of the paint dripped into Alex's eyes. It stung like crazy but Alex managed to bear with it because it gave the zombie a unique look.
The complete rewrite of the screenplay by Ceus Rob for the feature film version resulted in the storyline being entirely different to the original storyline in the short film version.
Zombies from Sector 9 (2020) was originally meant to be a short film but it ended up growing bigger than he intended, the footage he shot was 50 minutes long when edited. Ceus Rob felt that at its current state, it should become an 80 minute feature film. The film had lots of potential, the story needed to be expanded.