There is a deeper meaning to the name "Saja Boys." The Korean word "saja" can mean lion and we see that their logo and branding include lion imagery. However, in Korean folklore "jeoseung saja" are grim reaper figures who escort the souls of the dead to the afterlife. Typical depictions of jeoseung saja show them wearing a black hanbok and a gat (wide brimmed hat) just like the Saja Boys in their demon forms.
Several extra stories were cut from the movie to keep down the run-time, among them were Huntr/x and Saja Boys competing in a physical sports arena and Jinu's sister growing up to be the first hunter.
The film received 325 million views within its first 91 days of release, making it the most-watched Netflix film, surpassing Red Notice (2021), which received 231 million views in that timeframe.
According to co-director Maggie Kang, the Maltese tiger and magpie duo whose names were not revealed in the movie are named Derpy and Sussie, and the reason why they can travel between the human world and the demon world is because they are not demons, but Korean supernatural creatures. She based them on a famous Korean folk painting of the Tiger and the Magpie.
In an interview with Forbes, director Maggie Kang said that the Saja Boys "share the same CG body, except for Abby Saja, because he's a little bit bigger, we bulked him up like 20%."