“Supergirl” is making TV history by introducing the first-ever transgender superhero. Transgender actress and activist Nicole Maines was lucky enough to nab the incredible role of Nia, aka Dreamer, an alien who dreams about the future.

ET Canada’s Carlos Bustamante was on the Vancouver set of the Showcase series to find out how Maines feels about the overwhelmingly positive reaction she has received since taking on the role.

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“Going into San Diego Comic-Con where it was announced, I was very very nervous,” she recalls. “That’s the kind of thing where it could go either way, you know…either lots of applause or crickets. And so to see that outpouring of love and support, for both me and Nia as a character was so heart-warming. It just made me so endlessly excited to bring Nia to life.”

Maines adds: “Aside from being a trans superhero – she’s just a really cool superhero!”

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Her character isn’t the only thing Maines is excited to bring to fans. The actress tells Bustamante she’s “thrilled to be a part of a series that finds inspiration in real-life stories social issues.”

“I mean, my career stems out of activism, so being able to intersect the two, for me is a complete joy,” she says, adding she’s also felt welcome in Vancouver where the series films.

“Everyone’s been really nice and welcoming,” she says of her move to Vancouver. “When, you know, you’re a 21-year-old moving to a different country, it’s really nice to have a country that’s so nice, supportive, open and kind.”

The season 4 finale of “Supergirl” airs on Showcase on Sunday, May 19 at 8 p.m. ET/PT.

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