To be honest , I am fascinated by it all. First , we saw Zoro's Asura form (Asura are demons basically) , then we got Nico Robin with all those hands sprouting out (mostly seen in Hindu God and Goddess idols and whatnot) and now recently we saw Sanji father doing a thing called Garuda ( a bird which is some sort of 'vehicle' to one of the Lords). Oda has taken quite a few pages outta the Hindu Mythology and why not , it is beautiful. But now the thing is , there is a possibility of one more myth that could come into play here. The name is Monkey God , Hanumana. All these theorists of One Piece say that Luffy is gonna become a Monkey King or Sun Wukong, which is from another Chinese myth . Now these are two possibilities that could happen with Luffy after he awakens his Devil Fruit or smth like that.