Professor Appel

A shadowy figure who stepped onto the Marvel Comics stage in 1985, Professor Appel made his debut in the pages of Larry Hama and Rod Whigham's G.I. Joe, a Real American Hero #38 — a Bronze Age entry into one of Marvel's most beloved action franchises. With only a handful of appearances to his name, he's the kind of compact, purposeful character that collectors love to track down, and at least one of those issues carries genuine key-issue status. Sharing pages with heavy hitters like Snake-Eyes, Hawk, Zartan, and Ripcord, Professor Appel moves in serious company, making him a compelling piece of the intricate, sprawling world Hama built issue by issue.