(Covers information from Anderson's universe)
His weapon of choice was a Heckler & Koch G36K. He is shown as being a good friend with fellow commando Rain Ocampo. When the unit reaches Dining Hall B, J.D. and Rain are assigned to guard Matt Addison while the rest of the team moved on towards the Red Queen's chamber.
He and Rain are the first to encounter the Hive's newly-undead inhabitants. After a female zombie in a white coat bites Rain, he shouts repeated warnings before reluctantly shooting her with his sidearm. Shocked that his bullets had no effect, the zombie was eventually floored by Rain's MP5K.
After reuniting with the survivors from the Red Queen chamber, the team fight a running battle with the horde as they retreat towards the door. When the panicked Chad Kaplan fails repeatedly to input the door code, J.D. takes over and succeeds in opening the door. Unfortunately, in that moment, J.D. is suddenly overwhelmed by the zombies and Rain desperately tries to save him, only to get bitten and then forced away by Kaplan and Spence when the horde close in on them; causing an anguished J.D. to perish when the sheer number of zombies gradually feast into his flesh.
Shortly after his demise, J.D's body reanimates and he begins to search for human flesh to feed upon. Whilst the survivors made their way through the hives maintenance corridors they are suddenly overwhelmed by a large group of zombies. As the group attempt to climb on top of a venting system in order to avoid the zombies Rain attempts to hold them off. Whilst she is doing this out of the crowd stumbles J.D. who now resembles a mere shadow of his former self, Rain looks in terror as J.D. lunges forward and bites Rain on the neck, she pushes him back, aims her pistol at his head and pulls the trigger as he attempts to lunge at her again; killing J.D. and putting an end to his agonizing misery for good.