The Lich King is a central character in the lore of the video game series World of Warcraft, created by Blizzard Entertainment. He is known for his role as the ruler of the undead Scourge and is a powerful figure in the game's storyline. The Lich King wields the cursed sword Frostmourne, which grants him immense power but also corrupts his soul. Originally, the Lich King was a mortal named Ner'zhul, a shaman from the Shadowmoon Valley in the world of Draenor. After being betrayed and transformed into the Lich King, he became a key antagonist in the Wrath of the Lich King expansion, where players confront him in a climactic battle.