JD Fenix is one of the Characters in the game Gears of War 4. He is the son of Marcus Fenix. He is voiced by Liam McIntyre.
JD is "an idealist who wants to live his life with purpose." He ran away from home when he was young and joined up with the new COG (Coalition of Ordered Governments). He did well enough to reach the rank of lieutenant. By the time Gears of War 4 starts, he's gone AWOL with his squadmate and best friend, Del after an "incident" and is living among a village of Outsiders on Sera.