Wings and Hearts
A giant, more adult version of Genesis.
Demeter is the embodiment of Cor itself, acting as its god. She produced Genesis and Fauntus to be the harbingers of her judgment, making her in a way the mother of both Genesis and Fauntus. Though her power is freyed and draining, in anticipation of the Heartless threat she also called Eira, Solis, and Luna from there respective planes in the hopes of there help in stopping the Heartless.
Long ago she herself bowed to the goddesses Nyx and Eos, the sisters that formed Cor, and connected it to the Realms of Light (Positive Energy Plane) and Darkness (Shadow Plane) through Kingdom Hearts.