Selene is the former Titaness of the Moon, Night, and Radiance or simply the moon as she was the moon personified into a divine being (the same goes for Helios and the sun). Her Roman counterpart is Luna.
Selene and Helios remained neutral during the First Titan War as long as they got to retain their positions no matter the outcome. For this reason, they were among the few Titans not to be banished to Tartarus.
When the monster Typhon rose to destroy Mount Olympus and the gods, Selene rode into battle with her moon chariot and fought bravely against the storm giant. Ultimately, her attempts were unsuccessful and resulted in the craters seen on the moon up to this very day.
When western civilization shifted to Rome, the worship of Helios and Selene were neglected and as a result, the Titan twins faded. While Apollo inherited Helios' duties as god of the sun, his sister Artemis in turn received the moon chariot and became goddess of the moon in Selene's absence.
Helios was the first sun god, and Selene was the first moon goddess. Apollo said they were forced to give up their roles as the sun and moon gods due to the laziness of the Romans and pass them on to him and his sister Artemis. They faded, and Artemis and Apollo took their roles as the Moon and Sun.
Unlike her brother Helios, Selene was not as "flashy" and mostly kept to herself as she drove the moon chariot across the sky at night.
- She possessed the standard powers of a Titan.
- Prowess in Battle: Selene bravely fought against Typhon, though - like many others - she was ultimately defeated.
- Photokinesis: As the Titaness of the Moon, she had divine authority and absolute control over light.
- Selene is also seen as a goddess of the night, radiance, childbirth and insanity.
- According to some sources, Selene and Endymion were the parents of the famed Narcissus, the very handsome youth who spurned the affections of those who were attracted to him and was cursed to fall in love with his reflection.
- The chemical element selenium is named after her.
- The term "lunacy" was named after her Roman incarnation Luna, since it was thought that a full moon rendered people insane.
- Selene, a species of fish, is named after her.
- In modern times, Selene is the root of "selenology", the study of the geology of the moon.
- The meaning of her name is uncertain but some believe that means "brightness."
- The dog, hen, bull, and rooster were her sacred animals.
- The name of her Roman form, Luna, literally means "moon" in Latin.
- The famous Cleopatra VII named her only daughter after Selene: Cleopatra Selene.
- Selene has a lot in common with Artemis. The only major differences are that Artemis is a goddess and Selene is a Titaness and that Artemis is a virgin goddess while Selene was so not. According to Greek Mythology Selene was the mother of three daughters by Zeus; Pandeia, Herse, and Nemea. And by Endymion of fifty daughters called the Menae symbolizing the fifty lunar months in an Olympiad.