John Hargrove is a Game Designer for ArenaNet whose primary focus is the item and reward systems for both Guild Wars and Guild Wars 2. His favorite creations are Nicholas the Traveler and his trusty yak companion Professor Yakkington. Prior to joining ArenaNet in 2005, John worked as a senior customer service representative for Wizards of the Coast. If John ever figures out how to travel through space and time, then you will find him in Helsinki, Finland on the night of October 21, 2005.
— ArenaNet blog
John Hargrove left ArenaNet and works for Bungie.