Following the production of Godzilla vs. Biollante (1989), plans were made to resurrect another of Toho's most popular monsters, Mothra, and feature her in her own solo film for the first time since her debut in 1961. The ambitious project titled Mothra vs. Bagan would have followed her adventure from an egg to an adult, and would have paralleled a number of events originally featured in Mothra (1961), including her motivations to rescue the kidnapped Shobijin and her cocoon being burned by heat masers. Her adult form, however, would have sported an assortment of new abilities, and the wings of her prop would have been made to be very flexible for dynamic poses.
Sadly, Mothra's 90's-era debut would have to wait, as Godzilla vs. Biollante (1989) failed to meet box office expectations, giving Toho second thoughts on making a high-budget solo Mothra film and eventually shelving it. Later, Kazuki Omori proposed a new screenplay in 1990 titled Mothra vs. Godzilla, having Mothra face off against Toho's most iconic monster, with the possibility of Bagan appearing. Prior to this, Toho ran a theatrical poll during Godzilla vs. Biollante (1989) on what monsters were most popular with Japanese audiences, with King Ghidorah placing very high among young male voters. As a result, Toho would pursue a film using the three-headed titan instead, and Mothra's revival would be put on hiatus until 1992, where she would finally appear in Godzilla vs. Mothra (1992), albeit in a form not as versatile as her 1990 rendition.