Hydaelyn is a central figure in Final Fantasy XIV, depicted as both the living embodiment of the planet and its primal deity. She is revered as the source of light and creation, directly opposing Zodiark, her counterpart. Hydaelyn communicates with the Warrior of Light, guiding them to restore balance and fend off threats to the world. Her role is pivotal throughout the main story, influencing the lore and the unfolding events that shape the fate of Eorzea and its people.