Aec'Letec

Aec'Letec was a powerful Tanar'ri that in life was killed by Durlag Trollkiller that trapped the demon's soul in an enchanted dagger. Eventually after the madness and the death of Durlag Aec'Letec broke free from the dagger but remained trapped in Durlag's Tower; at last the Gorion's Ward entered in the tower and in the last level fought and killed the demon.