The Doctor has a new companion, and her name is Pearl Mackie. In a special live announcement during the FA Cup soccer semi-final on BBC One Saturday (April 23), the theater actress has been confirmed to play a character named “Bill.”

RELATED: Peter Capaldi sends fan mail to ‘Doctor Who’ comic artist Rachael Scott

“I’m incredibly excited to be joining the ‘Doctor Who’ family,” the actress tells the BBC. “It’s such an extraordinary British institution, I couldn’t be prouder to call the TARDIS my home! Peter Capaldi is such a brilliant actor, and his Doctor is such a wacky and wonderful character, I can’t wait to see what adventures are in store for him and Bill throughout time and space.”

RELATED: ‘Doctor Who’ fans: Here’s how to write your name in Gallifreyan

In an adrenaline-fueled introduction video, Capaldi and Mackie can be seen running away from Daleks. Explaining what they are, the wide-eyed “Bill” takes in the Doctor’s information and has some questions of her own. Judging by the clip — an excerpt from a future episode — the two actors already have an impressive chemistry.

“A new face in the TARDIS, a new voyage about to begin: Welcome aboard the amazing Pearl Mackie!” says showrunner Steve Moffat. “This is where the story really starts.”

RELATED: Peter Capaldi wants a diverse ‘Doctor Who,’ so give him one already

So, who is Pearl Mackie? A relative newcomer to the industry, she appeared alongside Ben Whishaw in a music video for the band Years and Years in 2014.

Mackie also appeared on a British daytime soap entitled “Doctors,” so she is now dropping the “s” and adding a “Who.”

“It’s so exciting to be revealing the much-anticipated new companion to the nation in such spectacular style,” says Charlotte Moore, BBC’s Acting Director of Television. “Pearl brings a wonderful energy and lights up the screen. She will captivate Doctor Who fans old and new across the globe.”

The actress is currently starring in a stage production of “The Curious Incident of the Dog in the Night-Time” for National Theatre, and has been known to serve as an acting tutor for children. Something tells us a whole lot of children are about to sign up for Pearl Mackie’s tutelage.

Posted by:Larry Carroll

Writer, Geek, Bon Vivant.