David Lieberman

A brilliant hacker and electronics expert, David Lieberman—known as Microchip—became the Punisher's indispensable behind-the-scenes partner, supplying Frank Castle with technical intelligence, weaponry, and logistical support from the shadows.

Few supporting players in Marvel's gritty corner of the universe have shown the staying power of David Lieberman, who first stepped onto the page in The Punisher #4 in 1987, courtesy of creators Mike Baron and Klaus Janson, right at the heart of the Copper Age when street-level Marvel storytelling was hitting its stride. Over nearly four decades of publication — spanning The Punisher War Journal, The Punisher, and beyond — Lieberman has proven himself a genuine fixture in one of comics' most unrelenting franchises, racking up 84 catalog appearances alongside some of Marvel's heaviest hitters: Kingpin, Wolverine, and Spider-Man all share his pages. With a key issue already to his name and a publishing history that stretches all the way to 2026, he's the kind of character that rewards the dedicated reader who wants to understand the full, lived-in world behind Frank Castle's war — and a worthy addition to any serious Punisher collection.