Speaking on new BBC Three companion series Doctor Who Unleashed, Davies said: "We had long conversations about bringing Davros back, because he's a fantastic character, [but] time and society and culture and taste has moved on. And there's a problem with the Davros of old in that he's a wheelchair user, who is evil. And I had problems with that. And a lot of us on the production team had problems with that, of associating disability with evil. And trust me, there's a very long tradition of this.
"I'm not blaming people in the past at all, but the world changes and when the world changes, Doctor Who has to change as well.
"So we made the choice to bring back Davros without the facial scarring and without the wheelchair – or his support unit, which functions as a wheelchair.
"I say, this is how we see Davros now, this is what he looks like. This is 2023. This is our lens. This is our eye. Things used to be black and white, they're not in black and white anymore, and Davros used to look like that and he looks like this now, and that we are absolutely standing by."
Davies added that Children in Need night felt like the perfect opportunity to debut the reimagined Davros.
"It's a night where issues of disability or otherness or being excluded from society come right to the front of the conversation. So of all the nights to make this change, I thought it was absolutely vital to do this. And I'm very, very, very proud of the fact that we have."