Doctor Who has a new adversary of royal proportions - after the Prince of Wales lent his voice to one of the Daleks.
Charles tried his hand at being a sci-fi baddie during a visit to the BBC's studios in Cardiff.
Using a microphone plugged into a voice modulator, he uttered the Daleks' famous "exterminate" catchphrase - leaving the show's writer Steven Moffat thoroughly impressed.
He said: "I haven't thought about how I could weave a meeting between the Doctor and the royal family. But Prince Charles's attempt at being a Dalek was great. There would be a part in the show for him if he wanted it."
According to actor Matt Smith, who is due to stand down as the current Doctor, the Prince has been a secret fan of the show since he was 15.
Smith and co-star Jenna-Louise Coleman gave the future king and his wife Camilla a tour of the show's set in Cardiff.
As well as getting to grips with a sonic screwdriver, the Prince stepped inside the famous Tardis.
The qualified helicopter pilot got to grips with its controls, while the Duchess of Cornwall pulled a lever to activate it.
Smith said: "The Prince was lovely and a charming bloke. He took quite an interest in the Tardis' controls and asked a lot of questions about it.
"He told me and Jenna that he'd been a big fan of the show since he was 15 - which we didn't know."