Christopher Vincent Metzen (born November 22, 1973) is an American game designer, artist, voice actor and author known for his work creating the fictional universes and scripts for Blizzard Entertainment's three major award-winning media franchises: Warcraft, Diablo and StarCraft. On occasion, Metzen has published his art under the alias "Thundergod". Metzen was hired by Blizzard Entertainment as an animator and an artist; his first work for the company was with the video game Justice League Task Force.