Cryptworlds.wikia.com/wiki/Goddess Moronia

Goddess Moronia is a self-important white-haired god-horse, the ruling goddess and supposed creator of the Crypt Plains, the world in which the game takes place.

When starting a new game, she will appear to the Player Character in a dream and give them their first quest, demanding that the player bring them 5 Goddess Relics so that she may use them to crush Dendygar and the Chaos God.

In the overworld, she can be found standing around in a room in the Crypts, where she'll be very standoffish towards the player. Once you have collected all 5 Goddess Relics, you're required to go there and speak to her to initiate the Moronia Ending.