Kezzia – Kiran L Dadlani
Goodthing – Mina Anwar
Steadfast – Ralf Little
Praiseworthy – Kaizer Akhtar
Nate – Kalungi Ssebandeke
Emojibot 1 – Kiran Shah
Emojibot 2 – Craig Garner
General production staff
Head of Production – Gordon Ronald
Production Executive – Tracie Simpson
Line Producer – Steffan Morris
Production Manager – Medyr Llewelyn
Location Manager – Iwan Roberts
Unit Manager – Nick Clark
Production Co-ordinator – Sandra Cosfeld
Assistant Production Co-ordinator – Nicola Chance
Production Assistants – Virginia Bonet, Jamie Shaw
Unit Drivers – Sean Evans, Kyle Davies
Unit Medic – Glyn Evans
Business Affairs Executive – Carol Griggs
Production Accountant – Simon Wheeler
Assistant Accountant – Justine Wooff
Camera and lighting department
1st Assistant Director – Fletcher Rodley
2nd Assistant Director – James DeHaviland
3rd Assistant Director – Christopher J Thomas
Assistant Directors – Rhun Llewelyn, Lauren Pate
Script Supervisor – Nicki Coles
Camera Operator – Mark McQuoid
Focus Pullers – Jonathan Vidgen, Elhein De Wet
Grip – John Robinson
Assistant Grip – Sean Cronin
Camera Assistants – Gethin Williams, Drew Marsden, Dan Patounas
Gaffer – Mark Hutchings
Best Boy – Andy Gardiner
Electricians – Gareth Sheldon, Gareth Sheldon, Bob Milton, Sion Davies
Art department
Supervising Art Director – Henry Jaworski
Art Director – Tim Overson
Art Department Accountant – Alison Harvey
Production Buyer – Sarah Frere
Set Decorator – Adrian Anscombe
Prop Buyers – Jen Saguaro, Jo Pearce
Storyboard Artist – Adam Pescott
Concept Artist – Darren Fereday
Graphic Artist – Matt Clark
Standby Props – Matt Ireland, Jonathan Barclay
Standby Carpenter – Paul Jones
Prop Hands – Scott Howe, Nigel Magni, Matt Watts
Standby Art Director – Christina Tom
Rigging – Shadow Scaffolding
Standby Rigger – Colin Toms
Head Scenic Artist – Clive Clarke
Painters – Steve Nelms, John Nelms, Paul Murray, Debby McShane
Storeman – Jamie Southcott
Prop Master – Paul Smith
Props Chargehand – Kyle Belmont
Props Driver – Gareth Fox
Construction Manager – Terry Horle
Construction Chargehand – Dean Tucker
Construction Driver – Jonathan Tylke
Construction Labourer – Jason Tylke
Practical Electricians – Callum Alexander, Austin Curtis
Graphics Assistant – Jack Bowes
Draughtspersons – Kartik Nagar, Julia Jones
Chargehand Carpenter – John Sinnott
Carpenters – Tim Burke, Keith Richards, Matt Ferry, Campbell Frazer, Chris Daniels, Joe Painter, George Rees, Alan Jones, Dan Berrow, Mike Venables
Title Concept – Billy Hanshaw
Costume department
Costume Supervisor – Kat Willis
Assistant Costume Designer – Zoe Howerska
Costume Assistants – Rebecca Cunningham, Leila Headon, Jenny Tindle
Make-up and prosthetics
Make-up Supervisor – James Spinks
Make-up Artists – Megan Bowes, Lolly Goodship
Movement
Stunt Co-ordinator – Dani Biernat
Stunt Performer – Troy Kenchington
Choreographer – Ailsa Berk
Casting
Casting Associate – Ri McDaid-Wren
Casting Assistant – Louis Constantine
General post-production staff
Post-production Supervisor – Samantha Price
Post-production Co-ordinator – Hannah Jones
Assistant Editors – Becky Trotman, David Davies
On-line Editors – Geraint Pari Huws, Mark Hardyman
Assistant On-line Editor – Christine Kelly
Special and visual effects
VFX Editor – Dan Rawlings
Special Creature Effects & Prosthetics – Millennium FX
Colourist – Gareth Spensley
Sound
Sound Recordist – Deian Ll┼╖r Humphreys
Dubbing Mixer – Mark Ferda
Sound Maintenance Engineers – Tam Shoring, Christopher Goding
Dialogue Editor – Darran Clement
ADR Editor – Matthew Cox
Effects Editor – Harry Barnes
Foley Editor – Simon Clement
Foley Artist – Meltem Baytok
The Doctor takes Bill to a colony world where small robots maintain order by enforcing happiness. When human settlers arrive, misunderstandings about emotion lead the robots to kill anyone deemed unhappy. The Doctor discovers their programming flaw and teaches them the complexity of human feelings. The situation stabilises as humans and robots begin to coexist more peacefully.
The Doctor and Bill Potts travel to a distant human colony controlled by robots designed to enforce happiness.
The Emojibots are robotic caretakers that interpret human emotions through emojis and eliminate sadness by removing people who appear unhappy.
The human settlers are missing or dead because the Emojibots misinterpret natural emotions as threats to happiness.
The Doctor discovers the robots are reacting to fear and misunderstanding, and he helps reset their logic to restore balance.
The episode explores artificial intelligence, emotional expression, and the dangers of enforced perfection.
