<P> In Season 5, Hades is introduced as the ruler of the Underworld . However, his position was later given to Cruella De Vil and (later) King Arthur . Zeus runs Mount Olympus . Kronos was revealed in a text in the Once Upon a Time book as the former ruler of Mount Olympus . </P> <P> Hades has mentioned to Zelena that he isn't the Devil, though he implies that the Devil is a real person . Nothing is known about him, however . </P> <P> Morpheus: God of Dreams was referenced in the episode "The Savior ." Though the unborn child of Rumplestiltskin and Belle French named Gideon impersonated him in order to convince his mother not to be fooled by his father again, the real Morpheus has not yet appeared and very little is known about him . </P> <Tr> <Td> Medusa </Td> <Td> N / A </Td> <Td> </Td> <Td> Deceased </Td> </Tr>

Where does the cast of once upon a time live