Based on available information, 'Mat Gelap, 1990' does not appear to feature any identifiable LGBTQ+ characters or themes. Plot summaries and reviews focus on the film's action-comedy elements involving a group of friends and illegal activities, without any mention of queer representation.

The film 'Mat Gelap' does not feature identifiable transsexual characters or themes. Its narrative primarily focuses on the comedic and dramatic exploits of a young man named Imuda, his involvement with a gang, and his relationship with Liza Othman, without any elements related to transgender identity.

The film features Liza Othman as Liza, who is involved in the plot's conflict. However, available plot summaries and character descriptions do not indicate any scenes where she engages in or wins direct physical combat against one or more male opponents. The action sequences primarily focus on the male protagonist.

The film "Mat Gelap, 1990" appears to be an original production without known prior source material, historical figures, or legacy characters. Consequently, its characters do not possess a pre-established gender that could be subject to a gender swap.

The film is not identified as an adaptation of prior source material or a biopic of historical figures. Consequently, there are no pre-established character races to compare against for a race swap to occur.

Not depicted in the film.