"An action packed Story of a Sea-monster with Thrills, Suspense and What Not?"
Thus was GOGOLA, the only Hindi kaiju film advertised. Released in 1966, Gogola saw the titular monster wreck havoc on Bombay (though the mumbaikars in the second poster look unperturbed). Sadly...

...all prints of Gogola seem lost & no copy exists of this classic creature feature. The soundtrack though is still accessible, & includes this epic song, नाचो नाचो नाचो नाचो गोगोला (Nacho Nacho Nacho Gogola = Dance dance, Gogola dance) complete with mention of Gogola's पतली कमर

While we're on the topic of forgotten/lost Hindi scifi films, check out Wahan Ke Log... https://twitter.com/theBekku/status/1326414047223422977?s=19