Some excerpts of the interview:
Katana has a very interesting, complex background. How much of that backstory did you have to flesh out in order to get to know this character?
I got lucky because Katana has her own comic book series, and then I read “Birds of Prey”. It helps a lot when you know the backstory of her character, because in this movie, I don’t think you see much of that. But bringing that, and knowing that at the back of my mind really helps with playing the character and doing all the action and everything. She’s an exquisite martial artist and a swordsman – swordswoman – player of swords. […]
In the comics, the character has normally been portrayed as heroic, a member of the Outsiders and on other teams. In this film, she’s hanging with supervillains. What’s her role? How does she fit in with those characters?
She’s the protector of Rick Flag, so I’d like to think she’s still one of the only characters that are so-called “good”, or, you know, “heroic”. She has her own moral code. Her oath is to give back to who she owes it to. And I think for this movie it’s Rick Flag, along with Amanda Waller – but who knows what she’s thinking.
How well does she interact with the other Suicide Squad members?
Throughout the movie, it grows. In the beginning, it’s not so friendly. She’s her own person, she’s a lone wolf. I think by the end of it, she finds her family, and that’s her story, and her journey to overcome trust issues as well and becoming part of a team and the Squad.
You have some scratches on your face. Are they scars?
Yeah, they’re scars.
So would it be safe to say she’s just as deadly as the others?
I think she’s one of the deadliest… she is the deadliest. Yeah, she is the deadliest.
Fact.
Fact. She’s not into fighting for herself. It’s for someone else. And when someone doesn’t care about her own well-being – to kill someone else and to protect someone – that makes her the scariest one. Try fighting someone that doesn’t care about what the outcome is for them, you know? You’re going against someone who’s going to give it their all no matter how many times you shoot at them. That’s why she’s so badass.