Which God from Greek mythology rules the underworld?

Hades was the King of the Underworld, the god of death and the dead. He presided over funeral rites and defended the right of the dead to due burial. Haides was also the god of the hidden wealth of the earth, from the fertile soil with nourished the seed-grain, to the mined wealth of gold, silver and other metals. Hades was devoured by Kronos as soon as he was born, along with four of his siblings. Zeus later caused the Titan to disgorge them, and together they drove the Titan gods from heaven and locked them away in the pit of Tartaros. When the three victorious brothers then drew lots for the division of the cosmos, Hades received the third portion, the dark dismal realm of the underworld, as his domain.