Mothra (Moth-ra (モスラ, 'Mosura') is a kaiju that has appeared in several Toho tokusatsu films since her introduction in Mothra (1961). Generally regarded as female by audiences, she is a giant lepidopteran with characteristics both of butterflies and of moths. The name "Mothra" is the suffixion of "-ra" (a common last syllable in kaiju names) to "moth". Since the Japanese language does not have dental fricatives, it is approximated "Mosura" in Japanese. In the American dubbing and various posters of Mothra vs. Godzilla, Mothra is also referred to as "The Thing". She is among Toho's most popular characters, primarily among female fans, and she has appeared in every Godzilla film era. Mothra is usually accompanied by two tiny priestesses or fairies (often called Shobijin—Japanese for "small beauties") who also speak for her. She is Mothra Leo's and various other Mothra's mother. She also serves as a Yang for Battra (Yin). She is an Insect Monster, like Mothra Leo, Battra, Megaguirus, Megalon, Kumonga, Mothra12, and Kamacuras.
Mothra appears with Mothra Leo, Anguirus, Rodan, King Caesar and Baragon a few moments after Godzilla joins the Heroes some of them do not trust the heroes at first, and have to be defeated by the monsters that trust the Heroes, most noticeably, Godzilla. Mothra trusts the Heroes, so she must help Godzilla convince the other monsters.