<p>SAN DIEGO, CA - JULY 21: Nicole Maines speaks onstage at the "Supergirl" Special Video Presentation and Q&A during Comic-Con International 2018 at San Diego Convention Center on July 21, 2018 in San Diego, California. (Photo by Mike Coppola/Getty Images)</p>
The popular show "Supergirl" created a lot of buzz at this past weekend's Comic-Con.
In the upcoming season 4, the show is making history by casting TV's first transgender superhero.
Actress Nicole Maines will play the character Nia Nal, a young reporter who eventually fulfills her destiny as the superhero named Dreamer.