Citadel

• 
  Richard Madden
  Mason Kane
• 
  Priyanka Chopra Jonas
  Nadia Sinh
• 
  Stanley Tucci
  Bernard Orlick
• 
  Ashleigh Cummings
  Abby Conroy
• 
  Roland Møller
  Anders Silje
• 
  Osy Ikhile
  Carter Spence
• 
  Caoilinn Springall
  Hendrix Conroy
• 
  Lesley Manville
  Dahlia Archer
• 
  Moira Kelly
  Joe
• 
  Nikki Amuka-Bird
  Grace Morrigan
• 
  Gráinne Good
  Valeria
• 
  Leo Woodall
  Duke
• 
  Simon Kim
  Agent Park
• 
  Leo Ashizawa
  Yamazaki
• 
  Laëtitia Eïdo
  Cristoph
• 
  Sarah Martins
  Sandra
• 
  Kineta Kunutu
  Billie
• 
  Lev Gorn
  Gregor Yovanovich
• 
  Audie Rick
  Young Mason
• 
  Paul Bazely
  Rahi
• 
  Ivo Nandi
  Vincenzo
• 
  Mo Chara
  Lars
• 
  Deborah Hedwall
  Mason's Grandmother
• 
  Alison Halstead
  Pearline
• 
  Gianfranco Terrin
  Italian Doctor
• 
  Mike Capozzola
  Doctor
• 
  Spencer Mulligan
  Gregor's Handler
• 
  Ethan Moorhouse
  Security Guard
• 
  Timothy Busfield
  Therapist Simmons
• 
  Sen Monro
  Balduino Basto

• Newton Thomas Sigel
• Jessica Yu
• Anthony Russo
• Joe Russo

• Josh Appelbaum
  ...
  (created by)
• Bryan Oh
  ...
  (created by)
• David Weil
  ...
  (created by)
• Lauren Wilkinson
  ...
  (staff writer)
• Melissa Glenn
• Angela Russo-Otstot
  ...
  (story by)
• André Nemec
• Jeff Pinkner
• Scott Rosenberg