Mia
Gemma Chan
Mia, the first conscious Synth, is determined to find her true self and the limits of her emotions and consciousness. Read Full Bio
Niska
Emily Berrington
Volatile and distrustful of humans, Niska is in possession of an extraordinary secret and has to decide what to do with her world-changing power. Read Full Bio
Leo
Colin Morgan
After the events of last season, Leo is trying to find some semblance of normality, but he's too damaged — he needs a new quest. Read Full Bio
Max
Ivanno Jeremiah
All Max ever wanted was a home, and he feels they may finally have found it. But as that home comes under threat, Max may realize his loyalty to others isn't enough. Read Full Bio
Laura Hawkins
Katherine Parkinson
Laura, a hardworking lawyer, is trying to get her family back to normal after welcoming Mia and the other conscious Synths into her home. Read Full Bio
Joe Hawkins
Tom Goodman-Hill
Joe is trying to rebuild his marriage and regain his family's trust after sleeping with Anita while he was unaware she was more than a machine. Read Full Bio
Mattie Hawkins
Lucy Carless
Helping the Synths gave teen hacker Mattie purpose and meaning and now she's desperate to connect with Leo and the others. Read Full Bio
Toby Hawkins
Theo Stevenson
Like his older sister, Toby has grown up. Deeply decent and always upbeat, he's a romantic at heart. Read Full Bio
Sophie Hawkins
Pixie Davies
Having formed a deeper attachment than anyone to Anita/Mia, Sophie is quietly hoping her best friend will return. Read Full Bio
Dr. Athena Morrow
The world's leading A.I. scientist, Athena lives only for her work, keeping her private life a closely guarded secret. Read Full Bio
Milo Khoury
Marshall Allman
A young Silicon Valley billionaire and founder of leading a global tech company, Milo is almost evangelical about the power of scientific innovation. Read Full Bio
Detective Sergeant Pete Drummond
Neil Maskell
Now promoted as part of an expanded Special Technologies Task Force, Pete is bravely attempting to make an impossible relationship work. Read Full Bio
Detective Inspector Karen Voss
Ruth Bradley
After it was revealed that Karen was a Synth with a troubled past, she now lives quietly with Pete. But the question of who -- and what -- she really is, is a constant obstacle to happiness. Read Full Bio
Odi
Will Tudor
Odi was Dr. George Millican's outdated home-help Synth. The last we saw, the police sent the hopelessly obsolete Synthetic to be recycled. Read Full Bio
Hester
Sonya Cassidy
Hester finds she's different to the other Synths — and coming to terms with exactly what she is will lead her down an unexpected path. Read Full Bio
Ed
Sam Palladio
Ed is a decent man who has put his life on hold to care for his ailing mother. His only company is the new Synth he's hired to help out at his failing cafe. Read Full Bio
Astrid
Bella Dayne
Astrid is an open-minded and free-spirited Berliner, but she'll have that openness tested by someone very special who comes into her life. Read Full Bio
Irene “Renie” Watson
Letitia Wright
Renie is a seventeen-year-old "synthie," part of a growing subculture of people pretending to be Synths. Read Full Bio
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