Hawkgirl and Scarlett
Hawkman and Hawkgirl will not be series regulars on this season of DC's Legends of Tomorrow, but I am hoping that we will st least get an appearance or two from them.  Since the Justice Society is supposed to play a focal role, I think the producers would be missing a good opportunity if they didn't show us the JSA/WWII era hawks.  It would be a good chance to update Cater's helmet, too!