The series follows Quentin Coldwater, who enrolls at Brakebills College for Magical Pedagogy to be trained as a magician while he was there he discovers that the magical world of his favorite childhood books is real and poses a danger to humanity. Meanwhile, the life of his childhood friend Julia is derailed when she is denied entry, and she searches for magic elsewhere.
• Jason Ralph as Quentin Coldwater, a graduate student, and the protagonist. He enrolls at Brakebills College for Magical Pedagogy to be trained as a Magician. A lifelong fan of the Fillory and Further series, he discovers that they are in fact based on truth and pose a danger to his world.
• Stella Maeve as Julia Wicker, Quentin's childhood friend, an Ivy League student whose life plans are derailed when she is denied entry into Brakebills. She searches for magic herself and is recruited by a secret society.
• Olivia Taylor Dudley as Alice Quinn, a magician and friend of Quentin's whose parents are magicians and who comes from a neglected home life.
• Hale Appleman as Eliot Waugh, a student at Brakebills and senior to Quentin. He is a heavy drinker and frustrating ally to Quentin.
•Arjun Gupta as Penny, Quentin's roommate and peer, deliberately intimidating and edgy.
• Summer Bishil as Margo Hanson
• Michael Cassidy as James, Julia's boyfriend and Quentin's best friend.
• Spencer Garrett as Ted Coldwater, Quentin's father.
•David Call as Pete, one of the confidants who welcome Julia into a clandestine underworld to develop her latent skills.
•Kacey Rohl as Marina, one of the confidants who welcome Julia into a clandestine underworld to develop her latent skills.
•Tembi Locke as Dr. Jennifer London, Quentin's doctor at the psychiatric hospital.
•Hiro Kanagawa as Professor March, one of Brakebills' teachers
13 episodes were ordered by Syfy. If you have not seen the first episode, you can watch it on Syfy.com, Syfy app or watch the 2-hour premiere on Monday, January 25 at 9 pm.