Today, Netflix confirmed the new actors and actresses who will join the cast of The Witcher in season three:
Gallatin – Robbie Amell (Upload: Virtual Reality, Code 8 – Forsaken, Resident Evil: Welcome to Raccoon City)

Character Description: A born fighter, Gallatin leads a Scoia'tael guerrilla army, fighting in the name of Nilfgaard. Unafraid to speak his truth, Gallatin's loyalty to his people ends up setting him on a collision course with Francesca for power.
Milva – Meng'er Zhang (Shang-Chi and the Legend of Ten Rings)

Character Description: A human adopted by the dryads of Brokilon Forest, Milva is a fierce and talented hunter. Her precise archery skills, coupled with her coldness to adapt and survive, make her a formidable adversary on the Continent – those who cross her path do so at their own risk.
mist – Christelle Elwin (Half Bad – Between Good and Evil)

Character Description: Mistle is a member of The Rats, a gang of teenage misfits who steal from the rich and divide among themselves - and sometimes share with the poor. She's tough, streetwise, suspicious of everyone and out for revenge, until a chance encounter that will change everything.
Prince Radovid – Hugh Skinner (Mamma Mia: Here We Go Again!, Finding Figaro, Fleabag)

Character Description: A royal playboy and younger brother of King Vizimir, Radovid suddenly finds himself a man within Redanian Intelligence. With his good looks and charm, which often comes from drinking, he is surprised at how incisive he can be on political issues. Everything is always a game, until someone gets hurt.
The Witcher, season 3:
As the Continent's monarchs, mages, and beasts compete to capture her, Geralt hides Ciri from Cintra, determined to protect his newly reunited family from those who threaten to destroy it. Tasked with Ciri's magical training, Yennefer takes them to the protected fortress of Aretuza, where she hopes to discover more about the girl's untapped powers; however, they discover they have landed on a battleground of political corruption, dark magic and betrayal. They must fight back and put everything on the line, or risk losing each other forever.
Return in season three
Henry Cavill, Anya Chalotra, Freya Allan, Joey Batey, MyAnna Buring, Tom Canton, Jeremy Crawford, Eamon Farren, Mahesh Jadu, Terence Maynard, Lars Mikkelsen, Mimî M Khayisa, Royce Pierreson, Wilson Mbomio, Anna Shaffer, Therica Wilson-Read , Cassie Clare, Mecia Simson, Graham McTavish, Bart Edwards, Simon Callow, Liz Carr, Ed Birch and Kaine Zajaz.
Lauren Schmidt Hissrich is showrunner and executive producer.
executive producers
Lauren Schmidt Hissrich, Tomek Baginski, Jason F. Brown, Sean Daniel, Mike Ostrowski, Steve Gaub and Jarosław Sawko.
Episode scripts are written by
Mike Ostrowski, Tania Lotia, Haily Hall, Rae Benjamin, Clare Higgins, Javier Grillo-Marxuach, Matthew D'Ambrosio and Troy Dangerfield.
The series will be directed by Stephen Surjik, Gandja Monteiro, Loni Peristere and Bola Ogun.
Based on books by Andrzej Sapkowski.