Rhea is the great mother goddess, and is the goddess of almost anything, just like Gaia, except she isn't associated with the Earth. She, like Hera, is a regal person. She is associated with the birth of Aphrodite. Though she knows some of the Olympians, she is one of the main Titans. She mostly is another Earth goddess, though doesn't cause havoc as often as Gaia does.
Rhea was one of the first ever goddesses to set foot on Mount Olympus, but not the founding 12.
Rhea's official Greek name is Ρεια.
She is regal and motherly and very kind and loves her kids. She'll do anything to protect them
Rhea is associated with almost every major god on Mount Olympus.
Rhea's gallery can be viewed here.