Jack "King" Kirby's comics career began in 1937 and continued for nearly six decades. After his fruitful collaboration with Joe Simon ended in the late 1950s, Kirby joined Marvel Comics, where the first issue of Fantastic Four cemented his reputation as comics' preeminent creator. A slew of famous titles followed that elevated Kirby to legendary status, including Incredible Hulk, Avengers and X-Men. Kirby returned to DC in 1971 with his classic "Fourth World Trilogy," which was followed by THE DEMON, KAMANDI and OMAC. Kirby continued working and innovating in comics until his death in 1994. Joe Simon is the co-creator of heroes including Fighting America, The Boy Commandos and The Guardian. With his partner Jack Kirby, Simon came to DC Comics shortly after the pair created Captain America for Marvel Comics. The Simon and Kirby team would go on to fame as the originators of the romance comics genre, as well as innovating with war, Western and mystery titles before splitting up in the late 1950s.