Bael is a warrior known as a Wrath Knight, and the leader of the Rooks. He was given a Portal just as Ghul Bellybottom had for working with Lord Mardrom, located at the Rooks' Nest. He beheaded Karin's father, and defeated Gustav in combat. He in turn, along with his two Master Assassins, were defeated by the Heroes of Legend.
Bael will rarely appear as an elite boss known as Bael II. He will usually drop legendary items including his rare weapon, "The Wrath of Bael of Potency." Bael II can be found in Windmoore Harbor, Skull Cove, Mount Spyr, and Chrystal Caverns. When defeated, the player will receive the achievement, "Bael, Part II."