Nia Nal, also known by her code name Dreamer, is a fictional superheroine from the Arrowverse television series Supergirl, portrayed by Nicole Maines.

[2] Nia Nal, who has a degree in international relations from Georgetown University,[3] was a political speechwriter in Washington, D.C. where she worked for Cat Grant, the White House Press Secretary, under the administration of President Olivia Marsdin.

[15] J'onn and Nia are sent to Shelley Island, where enslaved aliens are setting up a Claymore satellite on Lex Luthor's orders to destroy Argo City.

[16] In January 2018, Supergirl creator and executive producer Greg Berlanti spoke at an event about the lack of trans representation in the broader Arrowverse.

With her she brings sparkling wit and biting humor but under that banter-y, chic façade, lays a soulful young woman who has much to offer the world.

"[4] On July 21, 2018, trans activist and actress Nicole Maines was announced in the role at the show's San Diego Comic-Con panel.

[19] On June 8, 2021, Dreamer made her comic book debut in the story "Date Night", written by Maines,[20][21] featured in DC Pride #1.

On June 2, 2022, the official DC Twitter account announced Dreamer will appear in a graphic novel written by Maines with art by Rye Hickman.