Hades/Pluto

Giovanni Jacopo Caraglio (engraver), from Rosso Fiorentino, Pluto (from the series Mythological Gods and Goddesses), late 16th century, engraving, 21.5 x 11 cm, Fine Arts Museums of San Francisco, San Francisco

Hades (Greek) or Pluto (Roman) is the god of the underworld. When the universe was divided into three amongst the sons of Kronos/Saturn after the battle with the Titans, Zeus/Jupiter claimed the sky, Poseidon/Neptune took the sea, and Hades/Pluto gained control of the underworld. He is helped by his three-headed dog, Cerberus, and the ferryman of the dead, Charon. 

He is often portrayed with dark hair, a full beard, and a crown.  He sometimes drives a chariot.  A popular depiction of Hades/Pluto is in the act of abducting Persephone/Proserpina.