Just Imagine... is a comic book line published by DC Comics. It was written by Stan Lee, co-creator of several popular Marvel Comics characters, in which he re-imagined DC superheroes, including Superman, Batman, Wonder Woman, Aquaman, Green Lantern, and the Flash.

In July 2000, it was reported Stan Lee had signed a deal with DC Comics to produce a 12 issue miniseries of one-shot Elseworlds taking place within a shared universe that would feature reinterpretations of established characters within the DC Universe before culminating in a final Crisis one-shot.

While the contract with Lee was for 12 issues, editor Mike Carlin said that depending on the sales for the books a 13th Secret Files and Origins issue might be produced. Michael E. Uslan, a longtime friend of Lee's and former executive of DC who still held sway with the company due to producing the Batman films, approached Lee about doing the series with Lee welcoming the opportunity. At the premiere of Batman in 1989, Uslan saw Lee and longtime friend Bob Kane talking and decided to approach the two wherein Lee said he would be interested in collaborating with Uslan on a big project someday.

According to Uslan, after watching Lee and Kane, this led to Uslan asking a hypothetical question of "what if Lee had been hired by DC instead of Marvel Comics?", but the nature of Lee's contract with Marvel prevented Uslan from pursuing this project at the time. When Toy Biz bought Marvel in the wake of the company's Bankruptcy in 1999, the company renegotiated Lee's contract with Marvel, and while Lee's salary was severely reduced it also allowed Lee to pursue freelance work outside the company such as establishing Stan Lee Media. After Uslan confirmed that Lee was no longer Marvel exclusive and was open to the idea of working for DC, Uslan met with then DC Comics President Paul Levitz, where he presented a two-page proposal for the project with Levitz enthused about the idea.

The announcement was met with a variety of reactions across the industry and the comic reading fan base with rumors initially circulating the project was Lee's revenge for having his role in Marvel pared down with Toy Biz executives embarrassed and furious with the announcement. Lee dismissed these rumors stating:

I'd never do anything to hurt Marvel, they’re family. You don’t do things to hurt your family.

The line-up of DC reinterpretations was initially supposed to include a new take on the Teen Titans to be drawn by Walt Simonson. Another reinterpretation to be announced but never come to fruition was a new take on the Legion of Super-Heroes. Alex Ross was approached to create cover art for the miniseries, but declined as he felt both the miniseries and The Dark Knight Strikes Again were the wrong direction for DC to take describing the events of overly gimmick focused and a sign of creative stagnation. The covers were instead provided by Adam Hughes. Mike Mignola was also supposed to contribute to the series, but had to drop out due to his work load. George Pérez was also initially announced as being slated to draw the final Crisis issue of the series.

In Just Imagine Stan Lee with Joe Kubert - Creating Batman (October 2001), Batman is known as Wayne Williams instead of Bruce Wayne. Creators Stan Lee and Joe Kubert based this version on the characters created by Bob Kane and Bill Finger.