Aurelia is a summoned companion and NPC in Elden Ring. She is a spirit Jellyfish entrusted to the Tarnished (Elden Ring) by Roderika (Elden Ring).
Another jellyfish, her sister Aureliette, can be found in Stargazer's Ruins. Summoning Aurelia here reunites the sisters and fulfills their promise to see the Star (Sky)s together.