Marc Guggenheim Reveals Superheroes in 'Arrow' and 'The Flash' Annual Crossover!

The annual crossover between Arrow and The Flash is still three weeks away, but executive producer Marc Guggenheim has already revealed the full roster of superheroes for the two episodes! Read on to see who will be involved in the epic two-night event.

Guggenheim posted the photo on Twitter, and you can see it here. The full roster includes the Green Arrow (Stephen Amell), The Flash (Grant Gustin), Speedy/Red Arrow (Willa Holland), Black Canary (Katie Cassidy), John Diggle (David Ramsey), Hawkman (Falk Hentschel), and Hawkgirl (Ciara Renee).

Most of these characters are expected to appear in the spinoff DC's Legends of Tomorrow, yet there is no sign of some of the other heroes or villains that will be on that show. Other members of the roster include Ray Palmer/The Atom (Brandon Routh), Sara Lance/White Canary (Caity Lotz), Leonard Snart/Captain Cold (Wentworth Miller), Heat Wave (Dominic Purcell), Martin Stein (Victor Garber), Jay Jackson (Franz Drameh) and Rip Hunter (Arthur Darvill).

Perhaps the missing characters are part of the plot of the episodes in some way but not part of the superhero team for whatever reason.

We bring these names up because this two-part events will set up the spinoff. Deadline recently spoke to Guggenheim about the crossover and he discussed exactly how it sets up the new series.

"This is a big two-part event, one single bad guy, and it will very clearly launch Legends Of Tomorrow," Guggenheim said. "But at the same time what I think is a lot of fun about it is that it doesn't feel like a backdoor pilot for Legends Of Tomorrow. It feels like an episode of Flash and then an episode of Arrow. It truly is a two-hour Flash/Arrow event that just so happens to introduce us to some new characters who will be a big part of Legends Of Tomorrow."

What do you think of the photo? Let us know in the comments section below.