The new series of Doctor Who will see the Time Lord joined by his first openly gay companion.
Bill Potts’s sexuality will be revealed pretty much straightaway in her second line of dialogue when the show returns to BBC One on 15 April.
“It shouldn’t be a big deal in the 21st Century. It’s about time isn’t it?” Pearl Mackie, who plays Bill, told the BBC.
“That representation is important, especially on a mainstream show.”
She added: “It’s important to say people are gay, people are black – there are also aliens in the world as well so watch out for them.
“I remember watching TV as a young mixed race girl not seeing many people who looked like me, so I think being able to visually recognise yourself on screen is important.”
“[Being gay] is not the main thing that defines her character – it’s something that’s part of her and something that she’s very happy and very comfortable with.”
Gay and bisexual characters have featured in Doctor Who before, such as Captain Jack and River Song, but this is the first time the Doctor’s companion has been openly gay.
Mackie – who is taking over from Jenna Coleman as the new companion – said it had been “kind of insane” to be the centre of attention since she was announced in the role last April, despite not being seen on screen until this Easter.
“My Twitter follower count went from 400-and-something to 16,500 in about two hours, so that was pretty mental,” she said.
“But it’s been really nice, everyone seems to be really excited. It’s sort of like being welcomed into a family and all the fans have been really welcoming.”
The actress, who was performing in the West End production of The Curious Incident of the Dog in the Night-Time at the time she was cast, said the role of Bill was “the biggest job I’ve ever done”.
“Looking at previous alumni, it’s only done wonderful things for their careers – Matt Smith is phenomenal in The Crown, Jenna Coleman has just gone on to do Victoria and Billie Piper is doing incredible things,” she said.
“For me if I even get to do [a small amount] of those kind of things it would be incredible. It’s an amazing platform for me and it opens a lot of doors that wouldn’t necessarily have been open before – it’s very exciting.”
You can watch more of the interview here at 18:00 BST or on the Six O’Clock news on BBC One.