Due to the complete absence of any plot details or character information for 'Biography of Momatarô', an evaluation of its portrayal of LGBTQ+ characters and themes cannot be conducted. Consequently, no identifiable LGBTQ+ content could be assessed within the scope of this analysis.

The 1918 animated short 'Biography of Momatarô' retells the classic Japanese folk tale. There are no identifiable transsexual characters or themes present in the film's narrative or character portrayals.

The movie does not contain any action or adventure elements.

The film adapts the traditional Japanese folktale of Momotarō, a character consistently depicted as male in source material. There is no historical evidence or record indicating that the 1909 film altered the established gender of Momotarō or any other significant character.

The film is an early Japanese animation adapting a traditional Japanese folk tale. There is no historical or canonical evidence to suggest any character, including Momotarō, was portrayed as a different race than their established Japanese origin.