Kavan Smith
Deputy Andy (24 eps)
Colin Ferguson
Jack Carter (21 eps)
Salli Richardson-Whitfield
Allison Blake (21 eps)
Joe Morton
Henry Deacon (21 eps)
Erica Cerra
Jo Lupo (21 eps)
Neil Grayston
Douglas Fargo / S.A.R.A.H. (21 eps)
Jordan Danger
Zoe Carter (21 eps)
Niall Matter
Zane Donovan (21 eps)
Ed Quinn
Nathan Stark (21 eps)
Matt Frewer
Jim Taggart (21 eps)
Chris Gauthier
Vincent (21 eps)
Debrah Farentino
Beverly Barlowe (21 eps)
James Callis
Dr Trevor Grant (21 eps)
Christopher Jacot
Larry Haberman (21 eps)
Jaime Ray Newman
Tess Fontana (21 eps)
Adrienne Carter
Pilar (21 eps)
Tembi Locke
Grace Monroe (10 eps)
Trevor Jackson
Kevin Blake (6 eps)
Wil Wheaton
Isaac Parrish (4 eps)
Barclay Hope
Gen. Mansfield (3 eps)
Felicia Day
Holly Marten (3 eps)
Elias Toufexis
Adam Barlowe (3 eps)
Ming-Na Wen
U.S. Senator Michaela Wen (2 eps)
Noah Dalton Danby
Major Ryan (2 eps)
Marie West
Singer (2 eps)
Paul Lazenby
MP #2 (2 eps)
Hamza Adam
Soldier #2 (2 eps)
Jamie Kennedy
Dr Ramsey (1 eps)
Allison Scagliotti
Claudia Donovan (1 eps)
Edward James Olmos
First sled dog (1 eps)
Nevaeh Kidd
Jenna Blake (1 eps)
Jim Parsons
Carl the Jeep (1 eps)
Chris Parnell
Dr. Noah Drummer (1 eps)
Finn Michael
Scientist (1 eps)
Michelle Harrison
Lily Morgan (1 eps)
Stan Lee
Dr Lee alias « Generaleesimo » (1 eps)
Jill Morrison
Supply Clerk (1 eps)
Don Hastings
Baseball Game Announcer (1 eps)
Nickolas Baric
MP #1 (1 eps)
Eddie Frierson
Radio Announcer (1 eps)
Stacee Copeland
GD Nurse (1 eps)
Fiona Vroom
GD Employee (1 eps)
Benjamin Wilkinson
Dr. Anson (1 eps)
Matthew Thiessen
Scientist #1 (1 eps)
Kameron Louangxay
Scientist #2 (1 eps)
Chad Bellamy
GD Guard - Frank (1 eps)
Keenan Tracey
Jake (1 eps)
Joel Semande
Male Student (1 eps)
Christie Burke
College Girl (1 eps)
Tiara Sorensen
Sweater Girl (1 eps)
Olivia Cheng
Dr. Lisa Wheeler (1 eps)
Wesley Salter
Technician (1 eps)
Norman Misura
Irate Customer (1 eps)
Keegan Connor Tracy
Dr. Viccelli (1 eps)
John Reardon
Dr. Derek Thergood (1 eps)
Stephanie Belding
Dr. Tanya Zimmer (1 eps)
Dalias Blake
Construction Worker #1 (1 eps)
Jerry Rector
Construction Worker #2 (1 eps)
Bella King
Jessica Lansky (1 eps)
Harrison Xu
Tesla Kid #1 (1 eps)
Phillip Mitchell
Soldier #1 (1 eps)
Aaron Douglas
Dr. Ray Darlton (1 eps)
Luke Camilleri
Dr. Welke (1 eps)
Dave Foley
Dr. Plotkin (1 eps)
Wallace Shawn
Warren Hughes (1 eps)
Quinn Lord
Young Zane (1 eps)
Ty Olsson
Deputy Andy / Sheriff Andy (1 eps)