As Nia Nal, a.k.a. Dreamer, on The CW series Supergirl, actress Nicole Maines plays the first transgender superhero on television. Before her time on Supergirl, Maines had already spent years as something of a superhero in real life, fighting for trans rights, equality, and visibility from a very young age. With two Supergirl seasons under her belt, Maines has had the opportunity to highlight both the strides made toward acceptance and how far there is still to go. During this 1-on-1 phone interview with Collider, Maines talked about what she loves about her character, the incredible …