|Affiliation||Neutral (previously The Tower)|
Jeff was originally a member of The Tower as their primary gas expert, but left to construct his own fort behind the train station. Jeff then shuts off the city's gas supply so he could install a building defense system called the Apocalypse Wall. After Crane receives a call from Alfie about the shut off gates, he finds Jeff to fix the problem.
Jeff tells Crane that if he wishes to resume the gas distribution, he must open three gas valves located in a tunnel, under an overpass, and near the train bridge. As Crane does so, the last gate sets off a chain reaction causing major gas leaks in the various stations. Jeff orders Crane to close the blue line's valves at the primary distribution gate, and afterwards promises to flip the master switch in his fort to resume the gas flow across the city.
Crane remedies all of the issues and returns to Jeff's fort. Jeff then activates his Apocalypse Wall, which is a deadly perimeter of open gas lines lined across his fort. The flames torch nearby Infected, but a problem causes a major explosion in his fort, killing him. Crane then tells Alfie that he has to find a replacement, Spike Takes his place as Gas expert.
- If you go back to his fort after it explodes, you can go to the part of his fort that exploded to find his corpse next to a Double-barrel Shotgun.
- Due to his vocabulary, overall attitude, and clothing, it can be presumed Jeff served in the United States Army or another military prior to the outbreak.