Richard Madden
Mason Kane / Kyle Conroy (6 eps)
Priyanka Chopra Jonas
Nadia Sinh (6 eps)
Ashleigh Cummings
Abby Conroy (6 eps)
Roland Møller
Anders Silje / Davik Silje (6 eps)
Osy Ikhile
Carter Spence (6 eps)
Caoilinn Springall
Hendrix Conroy (6 eps)
Lesley Manville
Dahlia Archer (6 eps)
Stanley Tucci
Bernard Orlick (6 eps)
Moira Kelly
Joe (5 eps)
Nikki Amuka-Bird
Grace Helgoff (3 eps)
Gráinne Good
Valeria (3 eps)
Sara Martins
Sandra (3 eps)
Kineta Kunutu
Billie (2 eps)
Leo Ashizawa
Yamazaki (2 eps)
Leo Woodall
Duke (2 eps)
Laëtitia Eïdo
Cristoph (2 eps)
Lev Gorn
Gregor Yovanavich (1 eps)
Gianfranco Terrin
Italian Doctor (1 eps)
Spencer Mulligan
Gregor's Handler (1 eps)
Timothy Busfield
Therapist Simmons (1 eps)
Peter Gerety
Secretary McCullough (1 eps)
Andy Watts
Manticore Agent #2 (1 eps)
Gary Weeks
Manticore Agent #3 (1 eps)
Erin Boswell
Marjorie (BBC Reporter) (1 eps)
Ivo Nandi
Vincenzo (1 eps)
Alison Halstead
Pearline (1 eps)
Ethan Moorhouse
Security Guard (1 eps)
Xavilaine Hinecapie
Restaurant Hostess (1 eps)
Sen Monro
Balduino Basto (1 eps)
Pedro Leandro
Christiano (1 eps)
Mo Chara
Lars (1 eps)
Mike Capozzola
Doctor (1 eps)
Paul Bazely
Rahi Gambhir (1 eps)
Silvia Torregrosa
Midwife (1 eps)
Audie Rick
Young Mason (1 eps)
Deborah Hedwall
Mason's Grandmother (1 eps)
Serafina Tarafdar
Asha (1 eps)
Simon Kim
Agent Park (1 eps)
Ilan Muallem
Manticore Agent #1 (1 eps)