It looks like even more people will be running into the Doctor during his next adventures!

Joining an extensive roster of guests set to appear throughout Doctor Who’s forthcoming ninth series are UK actors Reece Shearsmith and Bethany Black.

Shearsmith is no stranger to the world of Who — he portrayed the second Doctor, Patrick Troughton, in the show’s fiftieth anniversary special An Adventure in Space and Time. Appearing in the untitled ninth episode, written by former The League of Gentlemen co-star Mark Gatiss, he describes his character as “a fantastic role…[in] a very singular episode which, I can say with authority, will be unlike any previous episode of Doctor Who.” Check out a quick interview with Shearsmith getting ready for his Who appearance below. 

Appearing along Shearsmith will be transgender actress and comedian Bethany Black, who announced her appearance through Facebook. “It is genuinely the greatest job I could ever have imagined getting. Everything about it is magical,” the self-professed Whovian said of her casting. “I’m enjoying every day of filming and cherishing it, because you never know if you’ll ever get to do anything like this again. For me it’s the gig of a lifetime.” Though no information is known on the role she will play, it has been reported her character will not be transgender.

Shearsmith and Black append their names to an impressive list that includes Game of Thrones’ Maisie Williams, Rebecca Front, Rufus Hound, and David Schofield, as well as returning Who notables Michelle Gomez, Jemma Redgrave, Ingrid Oliver, and Joivan Wade.

The casting announcements come on the heels of a spread of unconfirmed speculation about the show, including a possible Tenth Doctor return or cameo sparked by a meeting between David Tennant and former Who showrunner Russell T. Davies, and the possibility of the show not returning in 2016 due to current showrunner Steven Moffat’s mmitments to BBC’s other giant, Sherlock. (Even if the latter proves true, Doctor Who was recently renewed for a tenth series and will thus return.) 

Doctor Who’s ninth series will premiere September 19th on BBC and BBC America.