Sankekur was the Que-Hegan of the Zakarum faith. When Mephisto's Soulstone was split into seven shards, Sankekur received the largest, and became Mephisto's embodiment for the mortal plane.
At some point he wrote a letter to one of his subordinates, the Archbishop Lazarus, regarding the task of guarding Mephisto's Soulstone and expressing some concern about an unspecified insubordination.