The Scarlet King is one of the main antagonists of the SCP Foundation series. He is an ancient and evil god worshiped by groups such as the Children of the Scarlet King as a ruthless powerful monarch often tied to the destruction of the current world as we know it. He serves as the overarching antagonist behind the articles SCP-231 and possibly SCP-2317, and the main antagonist of the "Operation MAGNOLIA" series. He is one of the many anomalies proposed for the title of "SCP-001", an entry originally written for the 2018 Doomsday Contest.