Thanatos

Thanatos is the Greek god of death from The Heroes of Olympus.

Powers
Necromancy: Thanatos has complete control over death and the dead. He can also kill living beings with a single touch and has complete control over the doors that connect the world of the living to the world of the deceased.

Invisibility: Due to him having to separate the souls of the deceased from their bodies, he can render himself invisible and do this unseen.

Flight: He can fly due to having large black wings on his back.