There is currently an X-Men event going on in MFF and I found this on reddit. People were speculating Mystique is possibly impersonating Medusa, but either way, according to the comments they are pitting the Inhumans against the mutants again. I have to say that I have neither played nor read what happens before or after this. I am only basing this off of the 60 plus comments on reddit pertaining to this image.
Howeverm I have to say, I am so sick and tired of having them presented as these horrible monsters who care about nothing but themselves. Sure, the Inhumans care predominantly about their own species, but which species doesn't? Humans, Mutants and Inhumans all care about their race and have done things to preserve their way of life.