Sardar as Accursed
Sardar, The Soulless One, is a Unique Accursed found in the Tomb of Sardar in Act II of Diablo III. He spawns for the Sardar's Treasure event, when the player enters his vault room.
In combat, he has Vampiric, Nightmarish, Plagued and Teleporter affixes. Upon death, he drops The Musings of Sardar.
Sardar in life
In life, he was a corrupted Caliphate of Caldeum, who, after years of stealing and hoarding gold, wanted to venture to the west with the treasure he acquired, but apparently died before that came to be.