I mean, the potential of having this irreal menace would be having them being the "greater evil" that shows from time to time, forcing the good guys and the more realistic baddies to join forces against it (MOTU had the Evil Horde, Transformers had the dark god Unicron, etc). Check the Dio-Story "Battle of Cobra-La" I made last year or, for something closer to official, G.I.Joe/Transformers IV (though it's still non-canon, it and the previous three miniseries have their own canon)
Summarized: I like Cobra-La, but
