Craig T. Nelson
Dr. Simon Chase (2 eps)
Kim Cattrall
Dr. Amanda Mayson (2 eps)
Colm Feore
Adm. Aaron Richland (2 eps)
Cress Williams
Tall Man (2 eps)
Michael Reilly Burke
Adam Puckett (2 eps)
Michael Michele
Tauna (2 eps)
Matthew Carey
Maxwell Bishop (2 eps)
Megalyn Echikunwoke
Elizabeth (2 eps)
Blu Mankuma
Rollie Gibson (2 eps)
John Aylward
Ben Madiera (2 eps)
Giancarlo Esposito
Lt. Thomas Peniston / Werewolf (2 eps)
Gary Reineke
Dr. Ernest Bishop (2 eps)
James Coleman
Bobby Tobin (2 eps)
Gandolph St. Clair
Dr. Bastien (2 eps)
Kennedy Samuel
Nathan (2 eps)
Toi Svane Stepp
Kyrstyn (2 eps)
Michel Aubertin
Kimo (2 eps)
Steve Makaj
SEAL Leader Taylor (2 eps)
Jill Teed
SEAL Gray (2 eps)
Rob Daprocida
SEAL Ochoa (2 eps)
Rick Ravanello
SEAL Nash (2 eps)
Warren Takeuchi
SEAL York (2 eps)
Juliana Prospere
Robbi (2 eps)
Colin Lawrence
Communications Officer (2 eps)
Brian Steele
Creature (2 eps)