- Lewis Tan - Tolya Yul-Bataar
- Jack Wolfe - Wylan Hendricks
- Anna Leong Brophy - Tamar Kir-Bataar
- Zoë Wanamaker - Baghra
- Ben Barnes - General Aleksander Kirigan / The Darkling
- Antonín Mašek - Alexei
- Sean Gilder - Dressen
- Genesis Lynea - Natacha
- Atanáz Babinchak - Liev
- Caroline Boulton - Petya
- Jim High - Sergeant Yure Kuznets
- Gordon Morris - Line Cook
- Mark C. Phelan - Gambler
- Narinder Samra - Rotty
- Lucy Sheen - Kerch Madame
- Roby Schinasi - Fjerdan Fighter
- Júlia Ubrankovics - Milana
- Roderick Hill - Oncle Bart
- Dean Lennox Kelly - Pekka Rollins
- Scott Alexander Young - Big Bolliger
- Micah Holmes - Poppy Cox
- Tom Fyans - Male Squaller
- David Wurawa - Edyck
- Kate Russell-Smith - Ravkan Woman
- Adam Boncz - Oprichnik Guard Semyov
- Klára Tolnai - Tabitha
- Deirdre Mullins - Tante Heleen
- István Juhász - Cobbet
- Harry Baxendale - Forich
- Erik Gyarmati - Boy Orphan
- Emma Bercovici - Girl Orphan
- Ken Vedsegaard - Druskelle Leader
- Sára Schmidt - Attendant
- Brian Bovell - Innkeeper
- Dóra Rimóczi - Kit Attendant
- Jonathan Peck - Novokribirsk Dealer
- Hon Ping Tang - Botkin
- Jacob Seelochan - Taster Boy
- Andy Burse - Dubrov
- Kaylan Teague - Young Alina
- Cody Molko - Young Mal
- Elizabeth Rider - Ana Kuya
- Kelly Banlaki - Raisa
- Gabrielle Brooks - Nadia Zhabin
- James Jaysen Bryhan - Archivist
- Márton Nagyszokolyai - Fjerdan Ammo Carrier
- Robert Beck - Quartermaster
- Michael Adamthwaite - General Nilsen
- Hugo Speer - Lieutenant Bohdan
- Kevin Eldon - The Apparat
- David Verrey - King Pyotr
- Georgia Reece - Queen Tatiana
- Jasmine Blackborow - Marie
- Pedro Lloyd Gardiner - Marko
- Saif Al-Warith - Oprichnik Officer
- Ágnes Bánfalvy - Old Ravkan Woman
- Andy Apollo - Pavel the Inferni
- Katrina Durden - Olga
- Howard Charles - Arken
- Kelly Gough - Polina the Inferni
- Wayne Brett - Merchant
- Owen Good - First Army Soldier
- Luke Pasqualino - David Kostyk
- Mark Springer - Zemeni Ambassador
- Luke Kaile - Vanya
- Lucy Griffiths - Luda
- Steven Hartley - Commander Chalikov
- Muki Zubis - Tidemaker
- James Hillier - Captain Churik
- Tom Weston-Jones - General Zlatan
- Simon Sears - Ivan
- Julian Kostov - Fedyor Kaminsky
- Johnny K. Palmer - Bartender
- Tam Dean Burn - Kerch Captain
- Nick Cornwall - Slaver
- Hannah Lee - Kerch Sailor 2
- Shaun Cowlishaw - Kerch Sailor 3
- Virág Bárány - Eshana
- Peta Cornish - Ravkan Woman
- Fflyn Edwards - Young Kaz
- Kembe Sorel - Pottery Vendor
- Katalin Lábán - Needlepoint Woman
- Seamus O'Hara - Sergeant Halsov
- Tommy Rodger - Jordie
- Jonathan Slinger - Constable Sem
- Zsuzsanna Száger - Female Refugee
- Drummond Money-Coutts - Magician
- Tumi Fani-Kayode - Miradi
- András Korcsmáros - Grevyen
- Pääru Oja - Mogens
- Shobhit Piasa - Vladim Gulav
- Tim Plester - Per Haskell
- Thue Ersted Rasmussen - Ahlgren
- Rachel Redford - Fruzsi
- István Rubóczki - Dime Lion #3
- Joanna McGibbon - Nadia
- Keir Charles - Colonel Raevsky
- Tamás Farkas - Kovu
- Taylor Fay - Alby Rollins
- Zoltán Hetényi - Hiemstra
- Gábor Matus - Hellgate Guard #2
- Alistair Nwachukwu - Adrik
- Christine Grace Szarkó - Nanny Rollins
- Edward Davis - Prince Vasily
- Máté Haumann - Constable Florian
- Tamás Hagyó - Kerch Sailor
- Panka Murányi - Indentured Woman
- Mészáros Piroska - Seamstress
- Kata Sarbó - Passing Woman
- Attila Szél - Croupier
- Harry Szovik - Patron
- Tuyen Do - Ohval Saran
- Simon Armstrong - The Disciple
- Louis Boyer - Dominik
- Vanessa Grasse - Vatra
- Rhoda Ofori-Attah - Aditi
- Mariann Hermányi - Grisha Woman
- Iván Orsányi - Bouncer
- Géza Kovács - Druskelle
Hugo Speer interpreta a Lieutenant Bohdan en la serie.
Jessie Mei Li hace el papel de Alina Starkov.
Archie Renaux interpreta a Malyen 'Mal' Oretsev en la serie.
Freddy Carter interpreta a Kaz Brekker en la serie.
Amita Suman interpreta a Inej Ghafa en la serie.
Kit Young interpreta a Jesper Fahey en la serie.
Patrick Gibson hace el papel de Sturmhond / Nikolai Lantsov.
Daisy Head hace el papel de Genya Safin.
Danielle Galligan interpreta a Nina Zenik en la serie.
Calahan Skogman interpreta a Matthias Helvar en la serie.
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