Hunter (True End)

Hunter is the protagonist of Bloodborne, an outsider who has journeyed to Yharnam in search of Paleblood, a cure to the beastly plague that turns humans into beast. Upon arriving, they are conscripted into the Hunt, where hunters hunt those who are sick with the plague and search for a way to escape it. In their adventure they're met with battles of beasts and great ones that are the gods of the land. Upon killing the strongest great one, moon presence, Hunter turned into a great one herself. Able to hold her old form of a human but her true form is a giant god-like squid. (I took some creative liberties)