Metzen is a key architect of the World of Warcraft universe, overseeing the game's overall lore, narrative, and character development. The game's success catapults him to international recognition.

Throughout the various World of Warcraft expansions (The Burning Crusade, Wrath of the Lich King, Cataclysm, Mists of Pandaria, Warlords of Draenor, and Legion), Metzen continues to guide the game's narrative direction, creating iconic characters and storylines that resonate with millions of players worldwide.

Provides the voices for several key characters in World of Warcraft, including Thrall, Vol'jin and others.

Metzen became a central figure in BlizzCon events, connecting with fans through panels, presentations, and Q&A sessions. He became known for his passionate and engaging personality.