Transgender actor and activist Maines said that it “seems only fitting that we have a trans superhero for trans kids to look up to”. She also told Variety: “I want fans to take away an understanding of trans people.
“We can be anybody, we can be who we want, we can be superheroes – because in many ways we are.”
She added: “I think we’re in a time right now where more than ever representation in the media matters. And what we see on television has a very dramatic effect on our society.”
Maines also said that “Nia is so much more than just a trans superhero. She is a reporter, she is hopeful, she’s powerful, wise and such a good friend.”
Nia will be introduced as an employee of the organisation where much of the series is set – CatCo Worldwide Media.
Supergirl, which airs on Sky1 in the UK, sees Melissa Benoist as the lead character, while Maines has previously starred in US show Royal Pains as Anna.