Will Supergirl make her way to Star City during the epic, four-night crossover between Supergirl, The Flash, Arrow, and DC's Legends of Tomorrow?
It certainly looks that way, if a tweet from Arrow star Stephen Amell, showing both he and Supergirl's Melissa Benoist in full costume and standing shoulder to shoulder, is anything to go by.
Arrow is currently filming its hundredth episode, which because of timing has to be a lot of things to a lot of people: in addition to being part three of the four-part crossover, it also has to be a "love letter to the series" and satisfy on the level of being a special episode of a show that is popular in its own right outside of just the fans who watch all of the DC superhero shows.
Supergirl, meanwhile, exists on a different Earth in DC's multiverse than the rest of the CW heroes. As such, her exact role in the planned crossover event wasn't clear, with some sources suggesting that it would be relatively minor. meanwhile, just about everybody wants a chance to see the bright, sunny Kryptonian heroine face to face with the dark, brooding heroes of Star City.
So far, it's been revealed that Oliver's father Robert Queen (Jamey Sheridan) will return for Arrow's centennial celebration, as well as Katie Cassidy's Laurel Lance. Drug dealer Anthony Venza (Alex Zahara), who appeared in Arrow's first season, will be back as well.
Besides tying into the four-part crossover in some way, Arrow #100 will also feature at least one as-yet-unannounced guest star, according to social media posts from the cast and crew.
Supergirl airs on Mondays at 8 p.m.; The Flash on Tuesdays at the same time, Arrow on Wednesdays, and DC's Legends of Tomorrow on Thursdays. The Flash will debut its new episodes on The CW starting October 4; Arrow, October 5; Supergirl, October 10; and DC's Legends of Tomorrow October 13.