Sound of Metal does not feature any identifiable LGBTQ+ characters or themes. The narrative focuses entirely on the protagonist's experience with hearing loss and his personal journey of acceptance and recovery.

Based on available information, the film 'Sound of Metal' does not appear to feature any identifiable transsexual characters or themes. The story primarily revolves around the protagonist's experience with hearing loss and his subsequent journey of acceptance and adaptation, with no elements related to transsexual identity present in the plot.

The movie does not contain any action or adventure elements.

Sound of Metal is an original film with characters created specifically for this production. There are no pre-existing source materials, historical figures, or legacy characters from which a gender swap could occur.

The film "Sound of Metal" features original characters created for the movie, with no prior established racial identities from source material, history, or previous adaptations. Therefore, no race swap occurred.