Flow (2024) does not explicitly feature LGBTQ+ characters or themes. While some viewers may interpret subtle queer overtones and emotional subtext within its metaphorical storytelling, these elements are never directly depicted or identified within the film's narrative. The movie focuses on universal themes of connection and identity through animal relationships.

The film 'Flow' focuses on 1990s gay culture, closeted identities, and undercover policing, primarily through gay male experiences. While it addresses broader queer struggles with visibility and societal pressures, the available information indicates no explicit depiction or thematic focus on transsexual characters or the trans community within its plot.

The movie does not contain any action or adventure elements.

No information is available regarding the film's characters, source material, or any gender-related adaptations. Therefore, it is not possible to identify any characters whose on-screen gender differs from an established canonical or historical gender.

The film "Flow" (2024) features no human characters, focusing entirely on animal protagonists. Therefore, there are no human roles to which the concept of a "race swap" could apply.