Jason Ralph
Quentin Coldwater (13 eps)
Olivia Taylor Dudley
Alice Quinn (13 eps)
Arjun Gupta
William "Penny" Adiyodi (13 eps)
Stella Maeve
Julia Wicker (13 eps)
Jade Tailor
Kady Orloff-Diaz (13 eps)
Hale Appleman
Eliot Waugh (13 eps)
Summer Bishil
Margo Hanson (13 eps)
Rick Worthy
Dean Fogg (13 eps)
Oliver Bell
George (13 eps)
Hannah Henney
Dancer (uncredited) (13 eps)
Mackenzie Astin
Richard (6 eps)
Kacey Rohl
Marina Andrieski (6 eps)
Rose Liston
Jane Chatwin (5 eps)
Esmé Bianco
Jane Chatwin (5 eps)
Michael Cassidy
James (4 eps)
Anne Dudek
Prof. Pearl Sunderland (4 eps)
Bobbi Charlton
Silver (4 eps)
Jesse Reid
Bender (4 eps)
Fiona Hogan
Menolly (4 eps)
Hannah Levien
Victoria (4 eps)
David Call
Pete (4 eps)
Valerie Tian
Healer Faye (3 eps)
Trezzo Mahoro
Ralphie (3 eps)
Edwin Perez
Eugenio (3 eps)
Charles Mesure
The Beast (3 eps)
Katie Findlay
Eve (3 eps)
Nicholas Croucher
Martin Chatwin (3 eps)
Garcelle Beauvais
Our Lady Underground (3 eps)
Keegan Connor Tracy
Professor Lipson (3 eps)
Tembi Locke
Dr. Jennifer London (2 eps)
Anthony Marble
The Beast (2 eps)
Hiro Kanagawa
Professor March (2 eps)
Sachin Sahel
Surendra (2 eps)
M.C. Gainey
Stanley (2 eps)
Amy Pietz
Hannah (2 eps)
Amitai Marmorstein
Rick (2 eps)
Ingrid Nilson
Camille (2 eps)
Jesse Luken
Mike McCormick (2 eps)
Sibyl Gregory
Beatrix (2 eps)
Kavandeep Hayre
Raymond (2 eps)
Spencer Garrett
Ted Coldwater (2 eps)
Mageina Tovah
The Librarian (2 eps)
Charles Shaughnessy
Christopher Plover (2 eps)
Ben Esler
Charlie Quinn (1 eps)
Wayne Pére
Professor Van Der Weghe (1 eps)
Laura Fraser
Female Professor (1 eps)
Seth Meriwether
Martin Chatwin (1 eps)
Brian Beckman
Rupert Chatwin (1 eps)
Lev Grossman
Dev Fleishman (1 eps)
Abby Miller
Emily Greenstreet (1 eps)
Ryan Beil
Robert (1 eps)
Jesse Haddock
Smith (1 eps)
Matt Beairsto
Ellis Wirth-Downs (1 eps)
Jagen Johnson
Quentin's Roommate (1 eps)
Denise Crosby
Genji (1 eps)
Patricia Isaac
Doctor Meers (1 eps)
Megan Peta Hill
Natural Student (1 eps)
Jessica Harmon
Mackenzie (1 eps)
Brían F. O'Byrne
Mayakovsky (1 eps)
Lee Majdoub
The Djinn (1 eps)
Carmen Moore
Homicide Detective (1 eps)
Nesta Cooper
Gretchen (1 eps)
Rebecca Tilney
Prudence Plover (1 eps)
Oliver Rice
Hugh (1 eps)
Tom Amandes
Daniel Quinn (1 eps)
Jonathan Scarfe
Joe (1 eps)
Marco Grazzini
Margo's Ex-Boyfriend (1 eps)
Cardi Wong
Pizza Guy (1 eps)
Byron Noble
Roman Slave (1 eps)
Colin Cunningham
Bjorn (1 eps)
Arturo del Puerto
Servant of Our Lady Underground (1 eps)
Tony Giroux
Hooded Agent (1 eps)
Ryan Robbins
Knifemaker's Son (1 eps)
Laci J. Mailey
Fen (1 eps)
Primo Allon
Dint (1 eps)
Arien Boey
Dint the Boy (1 eps)
Daniella Evangelista
Fillorian Mother (1 eps)
Dominic Burgess
Ember (1 eps)
Judith Hoag
Stephanie Quinn (1 eps)
Yaani King Mondschein
Kira (1 eps)
Adam DiMarco
Todd (1 eps)