Conrad S. Hauser

Conrad S. Hauser is the real name of Duke, the field commander and first sergeant of the elite G.I. Joe anti-terrorism unit. A highly decorated Army Ranger, he serves as one of the team's primary leaders on missions against the villainous Cobra organization.

Conrad S. Hauser burst onto the Bronze Age comics scene in 1984, debuting in a key Cobra Commander storyline brought to life by Jim Mooney, and he's been a fixture of the G.I. Joe universe ever since. With 147 catalogued appearances spanning an remarkable four-plus decades — from Marvel's original run all the way to 2025 — this is a character with genuine staying power, not a footnote. Seven of those appearances carry key-issue status, making him a rewarding target for collectors digging into the Real American Hero mythos. He keeps extraordinary company throughout those pages, sharing adventures with legends of the line like Snake-Eyes, Scarlett, Shana O'Hara, Destro, and Cobra Commander himself — the very heart of the G.I. Joe saga.