Bel

A pit fiend of hell, Bel was once an archdevil in the Nine Hells that acted as the Warlord of Avernus until he was supplanted by Zariel. He was a military genius that specialized in misdirection and led with careful tactics in contrast to his successor's berserker rage.
He sent the savage seven to retrieve the nine adamantine rods that would unlock the companion and supplied them with the location of the bleeding citadel.
While escaping Avernus with the city of Elturel, Bel attempted to keep them in hell. The planetar Nascius severed his reaching hand and sent him back down to Avernus, but the group was knocked off-course and arrived in Cormyr 2 years later.