1) Zeus grew up and overthrew his father Kronos with the help of Metis. He freed his siblings who had been eaten by Kronos. 2) Zeus, Poseidon, and Hades decided to draw lots to determine who would rule different realms. Hades drew the underworld. 3) The underworld contained five rivers and areas like the Fields of Asphodel and Elysian Fields. Hades ruled as king of the underworld.