- Stephen Mangan - Mason
- Sarah Solemani - Alien #1
- Paterson Joseph - Space Marshall Clarke
- Sally Phillips - Clare Winchester
- Colin McFarlane - Male Bulaahg
- Richard Katz - Male Glish
- Katherine Jakeways - Female Glish
- Laurence Howarth - Fasmoff of Uberon
- Waen Shepherd - Captain Helix
- Montserrat Lombard - Lavya
- Geoffrey McGivern - Supreme Ruler
- Maggie Service - Computer (voice)
- Morwenna Banks - Announcer (voice)
- Morwenna Banks - Announcer
- Martina McClements - Female Bulaahg
- James Bachman - Lallakkiss #1
- Neil Edmond - Lallakkiss #2
- William Brand - Danish Commander
- Stephanie Dooley - Beautiful Space Lady
- Chris Brailsford - Space Force Inspector
- Robert Galas - Teenager
- Hon Ping Tang - Sergeant Destruction
- Dustin Demri-Burns - Queppu Warrior
- Stephan Kreiss - Gunface
- Catherine Shepherd - Arabella
- Jim Howick - Swamp Creature
- Dan Tetsell - Robot #1
- Tom Basden - Lallakkiss
- Andy Riley - Pastie Lord
- Clare Thomson - Commander Roche
- Thaila Zucchi - Commander Gulati
- Ewan Bailey - Computer (voice)
Capítulo disponible en las siguientes plataformas:
