The act started as a recurring sketch in Varanteaterns shows, most notably in their TV series Varan-TV.
Bhai Gurdas at one place in his Varan (I.49) construes "vahiguru" as an acrostic using the first consonants of the names of four divine incarnations of the Hindu tradition appearing in four successive eons.
The three-headed space monster is dispatched to protect the alien stronghold at Mt. Fuji, and battles Godzilla, Minilla, Mothra, Rodan, Gorosaurus, Anguirus, and Kumonga (Manda, Baragon and an unnamed Varan are also present but do not take part in the battle).
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This first draft included several monsters that would appear in the final film, such as Godzilla, Mothra, King Ghidorah, Rodan, Baragon, Varan, Kumonga, and Manda.
Director Shūsuke Kaneko's original script originally had Anguirus, Varan and Baragon defend Japan against Godzilla, but Toho told him to replace the former two with the more popular King Ghidorah and Mothra, as Anguirus and Varan were not considered bankable enough to guarantee a box-office hit.