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.Metzen was the Senior Vice President of Story and Franchise Development at Blizzard Entertainment and assisted the company's projects by providing voice talent for a number of characters, as well as contributing to artistic character design. Outside Blizzard Entertainment, Metzen authored a graphic novel series based on a futuristic second American civil war. Metzen retired in September 2016 to spend more time with his family. In his most recent work, Metzen co-authored graphic novels, Transformers: Autocracy and Transformers Monstrosity with author Flint Dille and artist Livio Ramondelli.