<Tr> <Th> Siblings </Th> <Td> Poseidon, Demeter, Hestia, Hera, Zeus, Chiron </Td> </Tr> <Tr> <Th> Roman equivalent </Th> <Td> Dis Pater, Orcus </Td> </Tr> <P> Hades (/ ˈheɪdiːz /; Greek: ᾍδης Háidēs) was the ancient Greek chthonic god of the underworld, which eventually took his name . </P> <P> In Greek mythology, Hades was regarded as the oldest son of Cronus and Rhea, although the last son regurgitated by his father . He and his brothers Zeus and Poseidon defeated their father's generation of gods, the Titans, and claimed rulership over the cosmos . Hades received the underworld, Zeus the sky, and Poseidon the sea, with the solid earth--long the province of Gaia--available to all three concurrently . Hades was often portrayed with his three - headed guard dog Cerberus . </P>

Who is the god of the underworld in greek mythology