With Arrow and The Flash, Warner Bros. have proven their ability to nail solo superhero story lines on The CW. With two crossover events, they've more than proven their ability to balance these worlds with one another, creating a strong, cohesive DC TV Universe.

Legends of Tomorrow is now poised to premiere towards the end of January, and it looks as though WB will once again ramp up the stakes and scale for its roster of more obscure DC heroes. However, that was not always the case; sources close to the upcoming team-up show indicate that it would have initially only focused on one or two members of its current lineup.

Sitting down for an interview with Kevin Smith on the Clerks director's podcast Fatman on Batman, Kreisberg explained that Legends of Tomorrow was originally conceived as a show focusing only on Hawkgirl. Eventually this idea was expanded to incorporate Hawkman as well, having a flashback oriented structure -- not unlike Arrow -- that would follow their romance through their hundreds of previous lives.

As the development of the series progressed, the creative forces behind the spin off realized there simply was no way a show focusing solely on these two characters could surpass the tone or scope of The Flash. That's when Legends of Tomorrow was born. As fans of the Arrowverse already know, the story of Hawkman and Hawkgirl's history was condensed to fit this year's Flash/Arrow crossover event, which in turn set the stage for Legends to premiere this spring.

Expanding the scope in such a way provides a distinct advantage for the show's writers. While stories centering on Hawkgirl and Hawkman can still easily be told throughout the series, Kreisberg and the rest of the creative team now have the freedom to explore numerous other areas of DC's TV universe without being beholden to any one of its many characters -- arguably none of whom have the sort of mainstream recognition possessed by Green Arrow or The Flash.

With Legends of Tomorrow set to premiere next month, the marketing campaign for the series has now offically gone into full swing. Brand new posters have been issued for all of the show's headlining characters. Check them out below:

The Flash will return on Tuesday, January 19, 2016, while Arrow will return on Wednesday, January 20, 2016 and Legends of Tomorrow will see its series premiere on Thursday, January 21, 2016.

Source: Smodcast Network, Comicbook.com, ET, IGN, Access Hollywood, EW, TV Line, TV Insider, Variety