Ravana

In Indian Mythology, specifically the Ramayana, Ravana was the king Sri Lanka, lord of the Rakshasa and a figure of great piety and great evil. In the World of Darkness, the name Ravana may (or may not) be used by several entities.

[Ravnos]
During the Week of Nightmares, psychics receive images of the Ravnos Antediluvian warring against several Bodhisattvas. In these fugues, the Ravnos Antediluvian is explicitly identified as Ravana.

Yama King
In Yomi Wan lies a ruined hell called Lanka, the domain of the lord of the Rakshasa, Ravana. This Yama King has fallen into deeper apathy and depression since his defeat by Hanuman, abandoning the city mostly to its own devices.

Childe of [Ravnos]
Clanbook: Ravnos (Revised) details the five childer of [Ravnos], among them is one Ravana. This childe throws in his lot with demons and abandons his master, but not before possibly tempting [Ravnos] into infernalism. It is likely that after millennia, this childe becomes the Yama King.