Microchip

Linus Lieberman, alias Microchip, is a former CIA intelligence analyst turned accomplished hacker and quasi-black-market arms dealer. He acts as the Punisher's source of intelligence and weapons.

The Vampire Wars
During the Vampire Wars, Microchip acted as the Nightstalkers' armorer, as well as chief of research and development and intelligence analyst. From their command center, he compiled satellite imagery and reports through his network of contacts to keep his allies appraised of the movements of Hoffman's forces, as well as those of several other vampire lords including Alaric Sunslayer and Nihilus.

Thunderhead
As Hoffman's hordes invaded New York City en masse, Microchip activated his last line of defense for the city, in the form of a large bipedal combat walker. Equipped with a battery of 800mm shoulder-fired cannons for bombardment and 155mm cannons for point offense, as well as virtual intelligence-directed, auto-targeting .50-caliber machine guns for close-range defense, the Thunderhead was used to defend the Queensboro Bridge and its exodus of refugees from the vampire onslaught until SHIELD reinforcements arrived to secure the surroundings.