Besides one very obvious thing, there’s another massive, crucial difference between Supergirl and Superman. Supergirl, aka Kara Zor-El, played by Milly Alcock in the new movie from DC Studios, has lived on Krypton. She’s met Kryptonians. Her memories of that place are the last ones in the galaxy. Her cousin, Superman (David Corenswet), has none of that. He was sent off as a baby to live on Earth. And so, just from that one distinction, you can begin to see why Superman is so trauma-free on his home while his cousin is so depressed and miserable on hers.

It’s there that the events of Supergirl pick up. io9 spoke with both Alcock and Supergirl‘s writer, Ana Nogueira, earlier this month in Los Angeles about Krypton, the original comic book, the DC Universe at large, and, of course, David Krumholtz, who plays Supergirl’s father, Zor-El, brother to Superman’s father, Jor-El (Bradley Cooper). © Warner Bros. Germain Lussier, io9: Milly, starting with you, something I love about the movie is the juxtaposition with Clark. Clark has never been to Krypton. Doesn’t know any Kryptonians. Kara does. Kara’s lived that. She kind of carries the legacy.

Milly Alcock: Yeah, I think that kind of gives her… it’s the core of her trauma. And I think that so much of the way that we behave in the world in which we live is the things that have happened to us and the way that we view ourselves within that circumstance. So it kind of just became the cornerstone of where to ground her.