There were some plans to bring Sir Zeliek (was one of the former four horsemen in Naxx raid in Wotlk) back during the Legion's alpha process...pity the idea was scrapped for unknown reason. He was my favorite one compare to the other three horsemen because he was the only on who still had his sanity and plead to the players adventurers to run and actually feel remorse.
This is the new remodled version of Sir Zeliek was in Legion alpha.
http://www.wowhead.com/npc=91274/sir...delviewer:10+0