David Vonderhaar

David Vonderhaar is Treyarch&apos;s Game Designer Director, and was responsible for the development of multiplayer in Call of Duty: World at War and Call of Duty: Black Ops. He is often seen now as Treyarch&apos;s unofficial Community Manager.

Trivia

 * Vonderhaar generally announces via his Twitter account when Double XP weekends will take place.
 * On his Twitter account, Vonderhaar has stated that lessons have been learned regarding Call of Duty: Black Ops&apos; multiplayer, and will be addressed in Treyarch&apos;s next game.
 * David Vonderhaar&apos;s head model is used on some multiplayer character models in Call of Duty: Black Ops II.