Ciara Renee, who is set to play Hawkgirl on the planned Arrow/The Flash spinoff; Legends Of Tomorrow will appear on the season finale of The Flash.
This news comes straight after the CW officially picked up the show.
The show's cast have characters from both The Arrow and The Flash tv series including fresh faces such as Ciara Renee, Arthur Darvill and Franz Drameh. The cast also includes Victor Garber, Dominic Purcell and Wentworth Miller who guest star regularly on\ The Flash. And from Arrow comes Brandon Routh and Caity Lotz. It is said that Lotz would not play the Black Canary so her role is still unknown.