Beginning in 2005, the Mego Museum community released free sets of promotional trading cards celebrating the history of Mego collecting. The Mego Museum World's Greatest Super-Heroes cards were given away at toy stores, comic book shops, and the 2006 San Diego Comic-Con International. The card series was produced by Secret Fan Base in Oakland, California, and printed in Canada. The designer, Robyn Adams, is also the founder of Mego Museum.

Superman appears on three cards in the first WGSH series, including one card with Clark Kent. Card #1 recreates the iconic 1976 cover of Superman vs. The Amazing Spider-Man. The cover was penciled by Carmine Infantino, finished by Ross Andru, and inked by Dick Giordano. Terry Austin assisted with the background inks. Superman was later redrawn by Neal Adams.

Card #2 received a reprint in 2006. The reprinted card backs vary from the original release and have a copyright date of 2006. The card image was featured on a promo card released in 2013 by the defunct CollectingSuperman.com website.

 

World's Greatest Super-Heroes was originally a series of eight-inch dolls from Mego Corporation. The toy line features characters from both DC Comics and Marvel Comics. World's Greatest Super-Heroes debuted at E.J. Korvette department stores in New York City on November 8, 1972. The Superman doll remained in production until 1983.

The World's Greatest Superheroes newspaper comic strip ran seven days a week from April 3, 1978, to February 10, 1985. On October 20, 2022, the Mego Corporation released the 50th Anniversary World's Greatest Super-Heroes lineup. The figures and costumes are reproduced from the original designs.