Pegasus (Kate O'Hearn)

Pegasus is the son of Neptune and Medusa, the nephew of Jupiter, Pluto, Vesta, Stheno and Euryale, the cousin of Perseus, Diana, Apollo, Minerva, Mercury, Vulcan and Mars, the second cousin of Cupid, the grandson of Saturn and the title deuteragonist of the Pegasus book series.

He is based on the mythical being Pegasus from Greek and Roman mythology.

Backstory
Prior to Pegasus' birth, his parents Neptune and Medusa went to a sacred temple of Neptune's niece Minerva and made out. Outraged by this, Minerva took her anger out on Medusa and turned her and her two sisters Stheno and Euryale into Gorgons.

Sometime after this, Medusa was beheaded by Neptune's nephew Perseus. Pegasus along with his brother Chrysaor (a winged boar) sprung from Medusa's neck stump. Pegasus was later tamed by Bellerophon and aided him in slaying the Chimera.

Later Bellerophon became overconfident and attempted to fly to Olympus with Pegasus. Outraged, the king of Olympus Jupiter knocked Bellerophon off of Pegasus, but allowed Pegasus to enter Olympus.

Pegasus series
In the present day, Olympus comes under attack from a race of creatures called Nirads and the Flame of Olympus is extinguished. Pegasus is sent out by Jupiter to find the Daughter of Vesta (the name given to the host of the heart of the Flame of Olympus) to bring to Olympus to restore the Flame. However an Olympian thief named Paelen goes after Pegasus wishing to take his golden bridle so he could use it to control Pegasus to take him wherever he wants. However both are struck by lightning and crash land in New York.

Pegasus lands on the rooftop garden of an apartment building. He is discovered by one of the apartment's residents, a 13 year old girl named Emily Jacobs. Pegasus is tended to by Emily and her classmate Joel De Silva. They pair later meet Pegasus' cousin Diana and they have to keep ahead of Nirads and a government group called the CRU.

They are eventually captured by the CRU, but are helped to escape by a redeemed Paelen when Nirads invade the CRU's base on Governor's Island.

It is also discovered that Emily is the Daughter of Vesta and goes to Olympus with Pegasus and the others and sacrifices herself to restore the Flame and is then reborn.