>>36349396>explain itThere are a few theories, but no confirmations. The prominent one being that Zygarde's forms represent different beings from Norse Mythology. 100% form might be Hel, the goddess of the underworld, who was also a giant.
>defend itDefend what exactly? Why I like it? I think it's cool. And if you don't like it then I doubt either of us is going to be convinced to change our positions. But I will say that the official art doesn't do it much justice. It has some amazing TCG art.