Thomas & Friends: The Christmas Letter Express does not feature any identifiable LGBTQ+ characters or themes. The narrative centers on holiday spirit and friendship, typical of the franchise, without any representation or references related to the LGBTQ community.

Thomas & Friends: The Christmas Letter Express does not feature any transsexual characters or themes. The film is a family-friendly animation centered on trains and a Christmas story, focusing on themes of friendship and determination, without engaging in LGBTQ+ representation or related topics.

This film is a children's Christmas special focused on cooperation and friendship among anthropomorphic trains. The narrative contains no combat scenes, duels, or physical fights of any kind, involving any characters, male or female. Therefore, no instances of female characters defeating male opponents in physical combat are present.

The film's main characters, including Thomas, Percy, and Nia, retain their established canonical genders from the original *Thomas & Friends* series and books. No characters are portrayed with an on-screen gender different from their source material.

The film's primary characters are anthropomorphic trains, which inherently lack human ethnicity, making the concept of a 'race swap' inapplicable to them. While voice actors are diverse, the on-screen human population and setting remain consistent with the original source material's predominantly white British context.