Diodor

Established History
Diodor, commonly known as Diodor the Damned, was a human necromancer and one of the first members of the Cult of the Damned. He was a decorated hero of the First War before he was converted. As a member of the Cult, he successfully led a contingent of Scourge to victory during the First and Second Summertide Assaults upon Scarlet Monastery. He was Killed in action during the Third (and final) Summertide Assault, which was successfully repelled by Scarlet Crusade operatives that had finally figured out his modus operandi.

Rumors
It is rumored that Diodor the Damned served as an early mentor to Plagueheart and was instrumental in bringing him into the folds of the Cult. Some have also speculated that Diodor was slain in combat by Plagueheart, as revenge for the supposed involvement of Diodor in the death of Plagueheart's mother.