Board Thread:Monster Discussions/@comment-26267590-20160602215017/@comment-25238001-20160602232023

Godzilla, King Kong, Mothra, and Ghidorah all seem to have at least a semblance an ability to strategize.

Gigan, Jet Jaguar, and Mechagodzilla 1 are all as smart as their creators, but that's probably because they are directly controlled by said creators.

SpaceGodzilla and Destoroyah are both extremely cunning.

Sanda and Gaira both seem to be somewhat sapient, as does Toho's Frankenstein.

I guess it really depends on your definition of intelligence.