 The 3-issue miniseries "" was revealed by Frank Miller to be set in the same universe as the "Dark Knight Returns" series, serving as an origin story for that universe's version of Superman.Younger versions of Batman and Wonder Woman appeared in the third issue of the series, marking their first meeting with Superman.As of 2019, Frank Miller has released the name of the 4th chapter of the series, a prestige format one-shot entitled "Dark Knight Returns