(初代ギャオ?) is the Gyaos suit design used in the 1967 and 1968 Gamera films, Gamera vs. Gyaos and Gamera vs. Guiron.
ShodaiGyao resembles a bat with a flat, triangular head. It has a head that closely resembles a pteranodon. It is colored black with orange stripes.
ShodaiUchuGyao is the same as the ShodaiGyao, but painted silver.
- This suit, along with the BaruGame, GironGame and RegionGame, are the only suits in the Gamera franchise to be used in more than one film, not counting stock footage.