Overlord Zeratul the Undying
Unlike so many of his peers, Zeratul awoke from his long sleep untainted by madness. While his mind was intact his body had changed over the aeons. His body was now able to transform in some kind of fog, thanks to this change he was able to cheat death on multiple occasions. While difficult to even hit him, thanks to this ability, he has been killed on multiple occasions but even that dit not hold him down for long.
