The film's portrayal of LGBTQ+ characters and themes is N/A, as the provided information focuses on external factors such as the cast's advocacy and the franchise's diverse fanbase, rather than specific narrative depictions within the movie itself. No identifiable LGBTQ+ characters or themes are described as being present in the film's story.

No specific information is available regarding the portrayal of transsexual characters or themes in 'Terrifier 3.' Based on current details, there is no identifiable depiction of the transsexual community or related narratives within the film.

The movie does not contain any action or adventure elements.

The film continues an original slasher franchise with established characters like Art the Clown, Sienna Shaw, and Victoria Heyes, all of whom maintain their canonical genders. The information provided highlights the presence of female protagonists and fighters, but does not indicate any character whose gender has been changed from a prior, established portrayal.

Based on the provided information, Terrifier 3 does not indicate any significant race swapping. The cast and character portrayals align with previous depictions, with no emphasis on racial diversity or race-related themes suggesting a change in established character races.