Iron Man

Few characters embody the ambition and ingenuity of Marvel's Silver Age quite like Iron Man, who burst onto the scene in Tales of Suspense #39 in 1963, conjured by the legendary team of Stan Lee, Larry Lieber, and Don Heck. Over more than six decades — an extraordinary span that stretches from the early 1960s all the way to the present — he has accumulated over 3,000 catalog appearances and a staggering 130 key issues, a testament to just how consistently this character has mattered to collectors and storytellers alike. His home turf spans Iron Man, The Avengers, and beyond, where he shares the page with the absolute cream of the Marvel universe: Captain America, Thor, Spider-Man, and their alter egos Steve Rogers and Peter Parker. If you're building a serious Marvel collection, Iron Man isn't a detour — he's practically the spine of it.