Terrifier 3 introduces several new human characters into the mix as Sienna Shaw’s story continues, but most of them are so annoying they almost ruin the movie. The main plot of the sequel takes place five years after Terrifier 2‘s ending as Lauren LaVera’s final girl character is released from a mental health facility and goes to spend Christmas with her extended family. By expanding the story in this direction, Terrifier 3‘s cast grows to include new Shaw relatives, while Jonathan’s time at college also brings some new characters with him.

https://screenrant.com/terrifier-3-new-human-characters-annoying-ruin-movie/