Based on available information, the film does not feature any identifiable LGBTQ+ characters or themes. Its narrative focuses on estranged parent-child relationships across three distinct anthology segments, with no explicit queer plotlines or character identities mentioned in reviews or details.

Based on available plot summaries, reviews, and descriptions, Father Mother Sister Brother does not feature any identifiable transsexual characters or themes. The film's narrative focuses exclusively on estranged family dynamics across three anthology segments, with no indication of gender identity or transformation being a plot point or character arc.

The movie does not contain any action or adventure elements.

The film is an original anthology screenplay with no prior source material. Consequently, none of its characters have a pre-established race from which to be swapped, aligning with the exclusion criteria for new, original characters.