Alan Tudyk
Doctor Harry Vanderspeigle (34 eps)
Sara Tomko
Asta Twelvetrees (34 eps)
Corey Reynolds
Sheriff Mike Thompson (34 eps)
Alice Wetterlund
D'Arcy Bloom (34 eps)
Levi Fiehler
Mayor Ben Hawthorne (34 eps)
Judah Prehn
Max Hawthorne (34 eps)
Elizabeth Bowen
Deputy Liv Baker (34 eps)
Meredith Garretson
Kate Hawthorne (34 eps)
Gary Farmer
Dan Twelvetrees (25 eps)
Kaylayla Raine
Jay (23 eps)
Diana Bang
Ellen Cho (21 eps)
Jenna Lamia
Judy Cooper (20 eps)
Gracelyn Awad Rinke
Sahar Karimi (19 eps)
Alex Barima
David Logan (18 eps)
Linda Hamilton
General Eleanor McCallister (17 eps)
Sarah Podemski
Kayla (14 eps)
Mandell Maughan
Lisa Casper (11 eps)
Enver Gjokaj
Joseph Rainier (10 eps)
Keith Arbuthnot
Alien Harry Double (10 eps)
Terry O'Quinn
Peter Bach (9 eps)
Nicola Correia Damude
Detective Lena Torres (9 eps)
Deborah Finkel
Abigail Hodges (7 eps)
Elvy
Isabelle (6 eps)
Ben Cotton
Jimmy (6 eps)
Nathan Fillion
42 (voice) (6 eps)
Trevor Carroll
John (6 eps)
Justin Rain
Elliott (6 eps)
Michael Cassidy
Dr. Ethan Stone (5 eps)
Kesler Talbot
Bobby Smallwood (5 eps)
Rachel Colwell
Lieutenant Hill (5 eps)
Alvin Sanders
Lewis Thompson (4 eps)
Jan Bos
Dr. Sam Hodges (4 eps)
Robert Moloney
Man at Diner (4 eps)
David Bianchi
Goliath (4 eps)
John Innes
Gerard Hundemer (4 eps)
Paul Piaskowski
Robert (4 eps)
Ethel Pitchford
Debra (4 eps)
Edi Patterson
Heather (4 eps)
Michael Adamthwaite
Howard Wright (3 eps)
Alix West Lefler
Young Eleanor (3 eps)
Christine Tsiliverdis
Mrs. Briscoe (3 eps)
Glenda Klassen
Val (3 eps)
Eleanor Walker
Dr. Smallwood (3 eps)
George Takei
The Gray (voice) (3 eps)
Andrea Geones
Bridget (voice) (3 eps)
Edna Manitowabi
Grandma Ruth (2 eps)
Lisa Penz
Lovely Woman (2 eps)
Roman Legend Jimmie
Sage (2 eps)
Giorgio A. Tsoukalos
Giorgio A. Tsoukalos (2 eps)
Julian Nelson
Lanky Stoner (2 eps)
Rocky Anderson
Sniper (2 eps)
Dylan Sloane
Young Peter Bach (2 eps)
Nisreen Slim
Sahar's Mom (2 eps)
Taylor Blackwell
Liza Vanderspiegle (2 eps)
Maxim Roy
Violinda Darvell (2 eps)
David James Lewis
Mayor Mitch Green (2 eps)
Rick Dobran
Pizza Guy (2 eps)
Kayla Deorksen
Pregnant Woman (2 eps)
Karina Logue
Mary-Ellen (2 eps)
Teagan Vincze
Andrea the Waitress (2 eps)
Jennifer Podemski
Rachel (2 eps)
Hwaa Hawk
Leo (2 eps)
Grace Sunar
Mari (2 eps)
Mary Walsh
Patty (2 eps)
Peter Hogan
Peter Hogan (2 eps)
Kirsten Robek
Laurie (2 eps)
Christly Charles
Marilynn (Hologram) (2 eps)
Michael Meneer
Doctor (1 eps)
Anthony David Moyer
Alien Harry (1 eps)
Patrick Keating
Priest (1 eps)
Jason Maybaum
Max (1 eps)
Camille Marty
Girl (1 eps)
Emma Oliver
Farm Girl (1 eps)
Betty Jackson
Sweet Old Woman (1 eps)
Janet Glassford
Nervous Woman (1 eps)
Tim Zhang
Guy (1 eps)
Lani Gelera
Driver (1 eps)
Doug Chapman
Man (1 eps)
Eugene Brave Rock
Shane (1 eps)
Kaiel Barreiro
Neighborhood Kid (1 eps)
Herbert Duncanson
Mailman (1 eps)
Elijiah Noskey-Auger
Joe (1 eps)
Ries Fowler
Dream Dad (1 eps)
Carly Buhler
Dream Mom (1 eps)
Ellexis Wejr
Dream Kid (1 eps)
Samuel Francisco
Dream Bike Rider (1 eps)
Maria Christina Fernandes
Dream Dog Walker (1 eps)
Brylee Smith
Young Asta (1 eps)
Rick McLean
Jack Rooney (1 eps)
Kalvin Olafson
Townsperson #1 (1 eps)
Cameron Michael Hallman
Cool Kid #1 (1 eps)
Garth Hodgson
Mr. Briscoe (1 eps)
Brent Stait
Roy the Cowboy (1 eps)
Madeline Rose Kelly
Ponytailed Woman (1 eps)
Pavel Romano
Handsome Teen (1 eps)
Brian Sutton
Lovely Man (1 eps)
Laara Sadiq
Bonnie Shaw (1 eps)
Alex Borstein
Carlyn (1 eps)
Jill Nixon
Becky (1 eps)
Sophia Bucior
Sweater Girl (1 eps)
Jennifer Rose Garcia
Waitress (1 eps)
Chris Bradford
Thomas Hoffman (1 eps)
Don Wright
Deputy Jack (1 eps)
Kate Mitchell
Old Lady (1 eps)
Kheon Clarke
Male Nurse (1 eps)
Rodrigo Massa
Waiter (1 eps)
Michael McIntyre
Bearded Man (1 eps)
Kemi Mathers
Female Experiencer #1 (1 eps)
Sandra Medeiros
Female Experiencer #2 (1 eps)
Tiffani Timms
Female Experiencer #3 (1 eps)
Richard Yee
Male Experiencer #1 (1 eps)
Ryan Egan
Male Experiencer #2 (1 eps)
Arianna McGregor
Female Abductee (1 eps)
Corvin Mack
Stanley (1 eps)
Ray G. Thunderchild
Ray (1 eps)
Veronika Hadravá
Mousy Woman (1 eps)
Gerardo Barcala
Patron (uncredited) (1 eps)
Nimet Kanji
Goliath (1 eps)
Kerry D Woodrow
Angry Neighbor (1 eps)
Barry Nerling
Joey (1 eps)
David Underhill
NYC Street Performer (1 eps)
Patrick Sparling
Vincent (1 eps)
Sharmaine Yeoh
Alien Performer (1 eps)
Don Lew
Casual Dressed Man #1 (1 eps)
Aggie Bell
Suzy Smallwood (1 eps)
Nickolas Baric
Casual Dressed Man #2 (1 eps)
William MacDonald
Farmer (1 eps)
Gerry South
Boat Rental Manager (1 eps)
Hailey English
Brenda (1 eps)
Sara Bynoe
Young Woman (1 eps)
Winson Won
Patience Deputy (1 eps)
Brittany Alexis Palmer
EMT (1 eps)
James Gallanders
Ski Coach (1 eps)
Asia Lizardo
Teen #1 (1 eps)
Savannah Miller
Teen #2 (1 eps)
Marilyn Norry
Older Woman (1 eps)
Simon Chin
Late 40s Man (1 eps)
Akeem Hoyte-Charles
SUV Driver (1 eps)
Dave Hospes
Man (1 eps)
Jenn Bird
The Wife (1 eps)
Ben Dextraze
The Other Man (1 eps)
Terence Hayman
Agent (1 eps)
Myrasol Martinez
Aide (1 eps)
Elijah Silva
Male Customer (1 eps)
Stephen Adekolu
Armed Soldier #1 (1 eps)
Boyd Ferguson
Armed Soldier #2 (1 eps)
Mike Richardson
Mike Richardson (1 eps)
Kristina Matisic
Reporter (1 eps)
Shalyn Ferdinand
Female Officer (1 eps)
Kis Yurij
Male Officer (1 eps)
Osvaldo Ramirez Castillo
Osvaldo Ramirez Castillo (1 eps)
Jef Miller
Jef Miller (1 eps)
Jessie Miller
Jessie Miller (1 eps)
James Dowdall
James Dowdall (1 eps)
Tina Marie Lameman
Gloria (1 eps)
Michael Lawrenchuk
Ralph (1 eps)
Sonny Litt
Farmington 5 Agent (1 eps)
Lucy Idella
Grey Alien Trainee (voice) (1 eps)
Austin Basis
Grey Alien Middle Manager (voice) (1 eps)
Autumn West
Louise (1 eps)
Kyle Jespersen
Camping Father (1 eps)
Brendan Riggs
Repairman (1 eps)
Jamie Paul O'Neill
Bartender (1 eps)
Heather Doerksen
April (1 eps)
Merry Lou Proudfoot
Hotel Room Mom (1 eps)
Georgia Bradner
Cheryl (1 eps)
Xiomara Lopez
Grey Nurse Double (1 eps)
Mitchell Saddleback
Tom (1 eps)
Christopher Wardrop
Man at the Bar (1 eps)
Fraser Corbett
Trailer Hybrid Worker (1 eps)
Mia Carr
Grey Assistant Double (1 eps)
Tommy Pico
Drew (1 eps)
Erin Karpluk
Dr. Wendy Beasley (1 eps)
Taylor Kinequon
Natalie (1 eps)
Jeff Gladstone
Dr. Gary Beasley (1 eps)
Aqqalu Meekis
Will (1 eps)
Guilherme Babilonia
Manuel (1 eps)
Aaron Douglas
General Devanney (1 eps)
Michelle Choi-Lee
General Li (1 eps)
Linden Porco
Dale (1 eps)
Michel Issa Rubio
Yoga Teacher (1 eps)
Derek C. Miller
Sampson (1 eps)
Murray Porter
Peter (1 eps)
Shakti Hayes
Aunty Mena (1 eps)
Richard Brown
Hunter (1 eps)
Jennifer Lines
Judge (1 eps)
Chris Webb
Man at Pond (1 eps)
Elle RIvas
Young D'arcy (1 eps)
Jude Wylie
Young Ben (1 eps)
John Viener
Grey Alien Lab Supervisor (voice) (1 eps)
Maggie Ma
Cheryl (1 eps)
Vivin Oommen
Flight Engineer (1 eps)
Josh Zaharia
Troy Torres (1 eps)
Marlee Walchuk
Dorothy (1 eps)
Laura Mac
Linda (1 eps)
Michael Bean
Richard (1 eps)
Jason Tremblay
Steve (1 eps)
Silvio Cuadra
Tom (1 eps)
Flossie McKnight
Terri the Waitress (1 eps)
Gina Vultaggio
Bree (1 eps)
Lini Evans
Bethany Bloom (1 eps)
Barclay Hope
Gerald Bloom (1 eps)
Denise Johnston
Chair Nurse (1 eps)
Curtis Braconnier
Pizza Delivery Guy (1 eps)
Clancy Brown
Mantid (voice) (1 eps)
Eric Mazimpaka
Hybrid Eric (1 eps)
Matthew Sears
Hybrid Frank (1 eps)
Jarrett Carlington
Kai-tah Blue Alien (1 eps)
Evelyn Chew
Lisa (Hologram) (1 eps)