Shin Hae-chul

Shin Hae-chul (6 May 1968 – 27 October 2014), also known by the nicknames Demon Lord (마왕) and Cult Leader (교주), was an avant-garde South Korean pop music performer. He was known for being a member of the pop group "N.EX.T".
Hae-chul died in Seoul, South Korea from a heart attack, aged 46.