Detective Dee and the Mystery of the Phantom Flame does not feature any identifiable LGBTQ+ characters or themes. The narrative is entirely focused on a historical mystery and action, resulting in no depiction of queer identity or relationships within the film's content.

The film 'Detective Dee and the Mystery of the Phantom Flame' does not contain any identifiable transsexual characters or themes. A character's cross-dressing is solely for plot-driven disguise, not an exploration of gender identity, leading to an N/A rating for trans portrayal.

The film features Detective Dee Renjie and Empress Wu Zetian, both portrayed consistent with their historical genders. Other significant characters appear to be original creations for this specific film, not pre-established characters whose gender was altered.

The film is based on the historical Chinese figure Di Renjie and features a cast of East Asian actors portraying characters who are historically and canonically East Asian. There is no instance of a character established as one race being portrayed as a different race.