Magadon Kest was a tiefling psionicist (or "mind mage") who was sired by Mephistopheles, Archduke of Cania, and a human woman. Close friend of the late Erevis Cale and the exarch Drasek Riven, he was instrumental in the struggle against the returned Netherese who were led by Shar-worshiper Rivalen Tanthul.