Supergirl Series Actress Nicole Maines Wiki, Biography, Age, Bio Details –Nicole Maines is an American actress. She has taken a place in the hearts of viewers with her dashing personality. She came into limelight when she made a guest appearance as a transgender teen in an episode of the USA Network TV drama “Royal Pains“. She is also featured in the HBO documentary ‘The Trans List’ and is the subject of the book “Becoming Nicole” by author Amy Ellis Nutt. According to the latest reports, she will join CW’s Supergirl during its fourth season as Nia Nal, aka Dreamer.