"Fierce killer marsupials" was spoken dialogue in Frank Maljevac's previous film Our Trip to Berribrook (2022). This film also takes place in the same fictional Berribrook National Park in Australia.
This film is set in 2018, mere days BEFORE the events depicted in Our Trip to Berribrook (2022). Fierce Killer Marsupial (2024) therefore serves as a prequel to that film, as the two films share the same location and the same antagonist.
Aside from the opening scene of the film with the supporting character Wubbsy; the main part of the film with the Charlie, Stacey and Jay characters takes place entirely during daylight hours, suggesting the events unfold during a single day. The sequel Our Trip to Berribrook (2022) had multiple scenes in the film set at night, in comparison, suggesting the events of that film took place over several days.
The end credits list the unseen "Fierce Killer Marsupial" being performed by director Frank Maljevac, who also plays a brief on-screen role as The Hunter/Park Ranger in the film.
Shot in 9 days.