The Flash Trailer Has DC Fans Buzzing Over Barry's Movie Poster Easter Eggs

2007's "I Am Legend" features a billboard that can be seen promoting a "Batman & Superman" film. Prior to the debut DC Extended Universe, Warner Bros. was hard at work trying to get a team-up film going. Featuring a poster for the then-in-development film in their 2007 blockbuster seemed like a pretty good idea at the time. In a 2014 interview with Collider, "I Am Legend" director Francis Lawrence revealed that Akiva Goldsman, who helped co-pen the Will Smith film, wrote an early draft for the Batman and Superman flick, only for the project to be stuck in development hell.

Nearly a decade later, DC Studios and Zack Snyder concocted "Batman v Superman: Dawn of Justice," the first film to introduce the Justice League. "Barry has an 'I AM LEGEND' poster in his room. Remember, that film touted a fake 'BATMAN & SUPERMAN' movie billboard prior to Snyder's film existing. Worlds collide, indeed!" shared Twitter user @ErikDavis.

As for the "Pacific Rim," it's unclear if there's any deeper meaning to its conclusion. Maybe Barry will fight his fair share of Kaiju? Or perhaphs it's just a cool nod to one of Warner Bros.' most underrated properties. What's more likely is that the poster is an homage to the man behind the film: Guillermo del Toro. The Oscar-winning creative produced Andy Muschietti's directorial debut "Mama" in 2013, which launched "The Flash" director's career.