The Biggest Easter Eggs And Cameos From The 'Crisis On Infinite Earths' CW Crossover

Most fans didn't think it was likely that anyone from the DCEU films would pop up in the CW crossover, but they managed to pull off a major surprise in the fourth episode. While Barry (Grant Gustin) is traveling through the Speed Force looking for the separated Paragons, he comes across Ezra Miller's Barry Allen in Star Labs. The two seem wildly confused, introduce themselves, and comment on how cool the other's costume is before going their separate ways.

Tom Ellis appears as Lucifer on Earth-666 (get it) when Constantine, Mia, and Diggle show up to ask for help bringing Oliver back to life. Lucifer plays the titular character in the Fox-turned-Netflix series of the same name.

Brandon Routh gets one last go in the Superman tights at the end of the crossover as his Superman Returns version of Clark is seen flying over Earth-96.

Brandon Routh's Kingdom Come Superman reveals that Lois Lane, Jimmy Olson, Perry White, and countless other Daily Planet employees were killed years ago in an attack by "a reject from Gotham that felt like we didn't cover him enough. He played a practical joke." The attack was clearly pulled off by the Joker, and you can see the front page from the attacks in the scene where the two Supermen fight.

Burt Ward briefly reprises his role as Robin from the 1966 Batman TV series in the opening of Part One. He's seen walking Ace the Bat-Hound before reacting in a very Robin way to the red skies.

While Kara is getting a tour of the Bat Cave from Luke Fox, she finds his trophy case filled with items from the enemies Earth-99 Bruce has killed. Some of the trophies include a Joker playing card, the Riddler's cane, a snowglobe, and, most disturbingly, Clark Kent's glasses.