Ciara Renee cast as Kendra Saunders aka Hawkgirl
In the new series, Saunders is a young woman who is just beginning to learn that she has been repeatedly reincarnated over the centuries. When provoked, her ancient warrior persona manifests itself, along with wings that grow out of her back, earning her the moniker Hawkgirl.
(source)
READ MORE: Other spinoff casting announcements
Arthur Darvill cast as Rip Hunter
The CW describes Rip Hunter as “a roguish time traveler who hides the strains of being responsible for history itself behind a facade of charm and wit.”
The son of Justice League member Booster Gold, Rip Hunter is generally credited with the invention of technologically-powered time travel in the DC Universe (as opposed to those who can time travel under their own power, as we’ve seen on The Flash). He was created in 1959, appeared in his own ongoing series from 1961 to 1965 and then had a series of status quo changes over the years leading up to appearances in Geoff Johns’ JSA, 52 and Booster Gold, then Dan Jurgens’ Time Masters: Vanishing Point. He wiil next appear in Convergence: Booster Gold.
In 52 and then the second volume of Booster Gold, Hunter was an enigmatic character whose true motives were often questioned — even by Booster, who doesn’t know that he’s Rip’s dad.
(source)