However, “The Devil’s Chord” made it very clear that they are not The One Who Waits in Doctor Who. Maestro is their name, and they are connected to another character already seen.

The ultimate 'Doctor Who' fan theory Aiming to destroy ... he even scared the Toymaker (who first mentioned him as The One Who Waits). What could a God of Death do with a time and space machine ...

"There's always a twist at the end + Susan Twist + The Doctor mentioning his granddaughter Susan + The One Who Waits + Ruby's mother." Susan Foreman and The One Who Waits For those needing to ...

So, The One Who Waits may well be the Big Bad of Season 14. Perhaps this is why Twist is popping up again and again, with more screen time and more important parts to play in the Doctor's adventures.