Everyone knows about Tyranitar being based on Godzilla, but what about Nidoking, Nidoqueen, and Rhydon being based on these guys (Seagorath and Seamons from the Ultraman series)? The one standing on two legs (Seagorath) is male, the one standing on four legs (Seamons) is female, and their coloration is similar to Rhydon's.