In 1963, Ditko teamed up with Lee again to create Doctor Strange, who debuted in Strange Tales #110.
In 1961, Lee recruited Ditko to help him create Spider-Man after Lee was unsatisfied with what Kirby had come up with.
By 1955, he began illustrating for Atlas Comics, the precursor to Marvel Comics, where he worked with Stan Lee.
Spider-Man debuted in 1962’s Amazing Fantasy #15, and Ditko stuck with the Web-Slinger’s main book for its first 38 issues, during which time he also co-created villains like Doctor Octopus, Lizard, Electro and Green Goblin.