The "Arrow"-verse's big four-show "Invasion!" crossover in November won't be its last. In addition to "Supergirl" and "The Flash's" upcoming musical crossover, the shows are going to become even more intertwined. Speaking to Entertainment Weekly, executive producer Marc Guggenheim revealed that Black Flash and other as-yet-unnamed "Arrow"-verse characters will be headed to "DC's Legends of Tomorrow" Season 2.
“We’re going to be seeing the Black Flash on 'Legends,'” Guggenheim revealed. “Lily Stein, who was introduced in 'Flash' [season] 3 [episode] 8, makes an appearance next week. So there’s a fair amount of 'Flash'-ness going on in 'Legends.' I wish I could say that we were so smart to take advantage of the new timeslot and do that, but we weren’t that smart. We just had already sort of been doing that organically anyway when we found out about the new timeslot."
Black Flash first appeared in "The Flash" Season 2. The character was created when Zoom -- Barry's speed-stealing nemesis -- was pulled into the Speed Force by Time Wraiths. The Time Wraiths physically transformed Zoom into the Black Flash, the Speed Force's manifestation of death for speedsters.
Additionally, Guggenheim teased that Black Flash won't be the only other "Arrow"-verse character to make the jump to "Legends of Tomorrow," saying, “We, just yesterday, made an offer to an actor to reprise their role from one of the other shows in the season finale of 'Legends.' Oh, and in the penultimate episode we’re gonna have — I can’t be specific about this, but it’s one of the most fun things I think we’ve ever done on the show — a character from one of the other shows on 'Legends' in a way that you’ve never seen before, you may never see again, but will, I think, just send fans into squeals of joy.”
Earlier this month, executive producer Andrew Kreisberg said that Black Flash would appear on other "Arrow"-verse shows, but didn't specify which one: “I will say that you might be seeing him on multiple shows... [Black Flash] is a classic character. We have storylines on multiple shows that fit having him around.”
Airing Tuesdays at 9 pm ET/PT on The CW, “DC’s Legends of Tomorrow” stars Brandon Routh as the Atom, Victor Garber and Franz Drameh as Firestorm, Caity Lotz as White Canary, Maisie Richardson-Seller as Vixen, Dominic Purcell as Heatwave and Nick Zano as Citizen Steel.