Jack Kirby moved from Marvel Comics to DC

In 1970, Jack Kirby moved from Marvel Comics to DC, at the end of the Silver Age of Comics, in which Kirby's contributions to Marvel played a large, integral role. Given carte blanche to write and illustrate his own stories, he created a handful of thematically linked series he called collectively The Fourth World. In the existing series Superman's Pal Jimmy Olsen and in his own, newly launched series New Gods, Mister Miracle, and The Forever People, Kirby introduced such enduring characters and concepts as archvillain Darkseid and the other-dimensional realm Apokolips.