Christopher Vincent Metzen 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.