Gamera vs Gyaos (1967)
Volcanic activity unleashes a bloodthirsty monster called Gyaos that Gamera must confront
Gamera vs Viras (1968)
Gamera the Flying Turtle falls under the spell of evil aliens, but two children free him and he returns to fight the aliens monster, Viras
Gamera vs Barugon (1966)
A giant monster that emits a destructive ray from its back attacks Japan and takes on Gamera