“Once I got the script through, I realised that not only were we telling this amazing superhero story, but we were also telling a very personal story as well. One which required research into mental health issues because that is a big part of what drives the story,” Turner said.
“I mainly drew inspiration from multiple personality disorder and schizophrenia, as it really is about duality, this movie. Darkness and light – that’s all within her. This sense of her being a completely other persona and struggling with that,” she added.