There are a few MSTK Gamera movies too, correct?
and a Mothra one if i recall correctly
Mothra was in the second Godzilla movie they did. Riffrax did the original Mothra film in theaters last year.
MST3K did five giant flying turtle movies in all. (Twice if you count the KTMA season.) I wish they had gotten their hands on the truly awful Gamera Super Monster from 1980, but Sandy Frank didn’t buy up that one.
I dare someone to put Gamera vs. the Imperial Stardestroyer ripoff in their fan edit. 😉