Supergirl Season 4 will introduce a number of DC Comics characters, it was announced at Comic-Con, including TV’s first transgender superhero, Dreamer (played by trans activist Nicole Maines). The panel also unveiled the first Season 4 trailer, which featured the debut of previously-announced series regular Sam Witwer as Agent Liberty. Jesse Rath (who recurred last season as Brainiac-5) has also been promoted to series regular for Season 4. Watch the trailer below!
Dreamer, aka Nia Nal, is the newest addition to the CatCo reporting team, per a Warner Bros. TV release. Described as “a soulful young transgender woman with a fierce drive to protect others, Nia’s journey this season means fulfilling her destiny as the superhero Dreamer (much like Kara came into her own as Supergirl).”
Source: IGN.com Supergirl Season 4 Trailer Teases Agent Liberty and a Super New Costume