Queen of the Mechonoids was the fourth and final story of the audio anthology The Diary of River Song: Series Eight. It was written by Jonathan Morris and featured Alex Kingston as River Song, Jane Slavin as Anya Kingdom and Joe Sims as Mark Seven.
But another shock awaits beneath this planet’s icy surface. The Mechanoids have been upgraded and are about to be unleashed upon the galaxy!
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- River Song - Alex Kingston
- Anya Kingdom - Jane Slavin
- Mark Seven - Joe Sims
- Annam Henic - Derek Griffiths
- The Mechonoids - Nicholas Briggs
- Jellidius is an ice planet.
- This story marks the Mechonoids' first appearance in a Big Finish audio drama since The Juggernauts in 2005.
- This story features Anya Kingdom and Mark Seven and helps reintroduce them for 2021's Dalek Universe series.
- As was the case in other audio stories, the name of the robots is pronounced quite clearly as "Mechanoids", despite the title and marketing using the "Mechonoid" spelling.
- The Mechanoids were sent out to prepare worlds ready for colonisation 1,650 years ago. (TV: The Chase)