Jeremy Crawford is the lead rules designer of Dungeons & Dragons, as well as the game's managing editor. He was the lead designer of the fifth edition "Player’s Handbook" and one of the leads on the "Dungeon Master’s Guide." He has worked on many other D&D books since coming to Wizards of the Coast in 2007. Before then, he codesigned the "Blue Rose" roleplaying game and wrote for "Mutants & Masterminds" and "Warhammer Fantasy Roleplay." He lives in Seattle with his husband.