The film 'The Hobbit: The Desolation of Smaug' does not feature any identifiable LGBTQ+ characters or themes. The narrative focuses on a fantasy adventure without incorporating elements related to queer identity or experiences, resulting in no portrayal to evaluate.

The Hobbit: The Desolation of Smaug does not feature any identifiable transsexual characters or themes. The film's narrative centers on a traditional high-fantasy quest, focusing on dwarves, elves, and humans, and their struggle against the dragon Smaug, without incorporating any elements related to transgender identity or experiences.

All established characters from J.R.R. Tolkien's source material maintain their canonical gender in the film. The character Tauriel is an original creation for the film trilogy and is not a gender-swapped adaptation.

The film adapts J.R.R. Tolkien's work, where major characters like Bilbo, Gandalf, and Thorin are consistently portrayed by actors whose race aligns with their established depictions in the source material and prior adaptations.