1. Strictly speaking, Mothra was kind of a pussy.
2. Mothra didn’t have anything cool, like fire-breath.
3. National Deet Dispersal Program. Come on.
4. Why didn’t the people of Japan just make a barge full of flammable material, set it on a heading north, then turn out all the lights in Japan? Mothra would have followed it and then frozen to death in the arctic.
5. Japan could have just used a giant electrified skyscraper and settled his hash.
6. I bet there’s erotic anime fan art of Mothra having sex with those tiny twin girls who went “Ma La La!” or whatever.