Seen here is famed Japanese SFX creator, Eiji Tsuburaya (Gojira, Ultraman and lots more), with Yamata-no-Orochi from the film Nippon Tanjo [lit. The Birth of Japan; aka The Three Treasures] (Japan-1959; dir. Hiroshi Inagaki). The eight-headed dragon was obviously a partial inspiration for Ghidrah.
Great picture, eh?
Source: August Ragone’s blog: The Good, the Bad and Godzilla