the ancient figure of Hades has disappeared, but his popular successor is not God or Saint Michael but Charos, who is responsible for accompanying the dead to the Underworld, still known as Hades
Alexiou argues that Charos is the direct popular successor of the ancient Hades figure, assimilated into Christian practice without conscious theological transformation, serving as psychopomp and Underworld keeper simultaneously.
, The Ritual Lament in Greek Tradition, 1974thesis