Thavius Kreeg: D&D Collector's Series Descent into Avernus Miniature
Thavius Kreeg: D&D Collector's Series Descent into Avernus Miniature - Rules of Play says:
Thavius Kreeg, the treacherous High overseer of Elturel, entered into an infernal bargain with the archdevil Zariel, ruler of Avernus. This deal has led the city to disappear from the Forgotten Realms and descend into Avernus, the first layer of the Nine Hells. This figure is is Thavius as an amnizu, a greater devil that leads infernal legions into battle and commands guardians at the gateways to the Nine Hells.