Kenneth Johnson Creator Marc Singer Mike Donovan Actor Faye Grant Dr. Julie Parrish Actor Jane Badler Diana Actor Lane Smith Nathan Bates Actor Blair Tefkin Robin Maxwell Actor Jennifer Cooke Elizabeth Actor Michael Ironside Ham Tyler Actor Michael Wright Elias Actor Robert Englund Willie Actor Jeff Yagher Kyle Bates Actor June Chadwick Lydia Actor Howard K. Smith Self Nicky Katt Sean Donovan Actor Aki Aleong Mr. Chiang Actor Duncan Regehr Charles Actor Don Maxwell Captain Roland Guest Star Burt Marshall Steve Roller Guest Star Barry Jenner Visitor Bridge Technician Guest Star Linden Chiles Air Force General Guest Star Michael Durrell Robert Maxwell Guest Star Jenny Beck Elizabeth Maxwell Guest Star