In Mothra vs. Godzilla, the GojiMosuImago's name comes from another kaiju's name, Godzilla (ゴジラ?), Mosu, from GojiraMothra's Japanese name, Mosura (モスラ?), and imago, from the fact that it is a design for Mothra's imago form.
In Ebirah, Horror of the Deep, the NankaiMosuImago's name comes from the film's Japanese title, specifically nankai (南海?), meaning south seas, Mosu, from Mothra's Japanese name, Mosura (モスラ?), and imago, from the fact that it is a design for Mothra's imago form.
The GojiMosuImago is very similar to its predecessor, the ShodaiMosuImago, although there are a few differences. The body of the GojiMosuImago is slightly more slender and less rounded. The legs are much longer and more pronounced, and are clearly visible rather than held close to the body.
The colors on the GojiMosuImago are more muted, and the wing design is slightly different. Most of the orange fur on the body has been changed to brown, while the areas that were brown on the ShodaiMosuImago are now a darker shade of brown. The eyes are more rounded and extend further out of the head. The GojiMosuImago's antennae are thinner, while the feelers are now covered in fur. The GojiMosuImago's face is more prognathic than the ShodaiMosuImago's, with the snout extending out from the rest of the face before the mandibles. The mandibles themselves are also larger than those of the ShodaiMosuImago.
The GojiMosuImago puppets were reused for Ebirah, Horror of the Deep two years later. The props had deteriorated slightly, and the wings had become more stiff and frayed. The colors are now faded, while the fur that had once been white is now a dingy light brown tone. For several scenes set on Infant Island, Mothra was simply painted onto the backdrop of the scene. This design is also called the NankaiMosuImago (南海モス成虫?) in Ebirah, Horror of the Deep. NankaiMosuSeichū