Kang the Conqueror

Few villains in Marvel's vast cosmos can claim the sheer audacity of Kang the Conqueror, who burst onto the scene in The Avengers #8 in 1964, conjured by the legendary duo of Stan Lee and Jack Kirby at the very height of the Silver Age. Over an astonishing six decades — with 169 catalog appearances, five of them collector-prized key issues, and starring roles across Avengers, The Avengers, and the epic Avengers Forever — Kang has proven himself one of Marvel's most enduring and complex antagonists. He's spent those decades locking horns with the absolute cream of Earth's Mightiest Heroes: Captain America, Iron Man, and Thor among them, which tells you everything about the scale of threat he represents. If you're serious about Marvel history, Kang isn't just worth knowing — he's essential.