Based on available information, 'The Great Flood' (2025) does not feature any identifiable LGBTQ+ characters or themes. Plot summaries, character lists, director interviews, and reviews consistently omit any mention of LGBTQ+ content, focusing instead on disaster survival, parental bonds, and human emotions.

The film *The Great Flood* (2025) does not feature any transsexual characters or themes. The narrative centers on disaster survival, parent-child bonds, and engineered human bodies, without any mention of gender or sexual transformation. Therefore, the overall portrayal of transsexual characters and themes is rated as N/A.

The provided information describes a scene where the female character An-na is involved in physical combat with male opponents (SWAT team) during an evacuation. However, the description indicates she evades them alongside a male agent and no individual victory is specified for her against the male opponents.

The film is an original science fiction story with no prior source material or historical record establishing character genders. Consequently, no characters have an on-screen gender that differs from a previously established one.

The Great Flood (2025) is an original South Korean science fiction film featuring newly created characters. There is no prior source material or historical context to establish a canonical race for any character, thus precluding a race swap.