Mothra (1961) is a classic kaiju film centered on a giant moth deity and human interactions with it. The narrative does not feature any identifiable LGBTQ+ characters, relationships, or themes, resulting in no portrayal to evaluate.

The film 'Mothra, 1961' does not feature any identifiable transsexual characters or themes. Its narrative centers on a giant monster, an expedition to a remote island, and the rescue of miniature humanoids, with no elements related to transgender identity present in its plot or character development.

The film features the Shobijin, two small female priestesses, who are central to the plot but do not engage in physical combat. They are held captive and use telepathy to summon Mothra. Mothra, a giant insect, battles military forces and infrastructure, but not in close-quarters physical combat against human male opponents.

As the original film in the Mothra series, all characters introduced in Mothra (1961) are new and original to this production. There are no prior canonical versions of these characters from source material or previous installments to establish a baseline for a gender swap.

Mothra (1961) is the original film featuring its human characters. There is no prior source material (comics, novels, earlier films) or historical record to establish their race before this movie, thus precluding any race swaps.