Main Characters Mark Harris 17 main appearances C. W. Crawford 16 main appearances Dr Elizabeth Merrill 15 main appearances Mr. Schubert 1 main appearances Dr. Miller Simon 3 main appearances Ernie Smith 1 main appearances Admiral Dewey Pierce 1 main appearances
Recurring Guest Characters American Scientist 1 guest appearances Russian Scientist 1 guest appearances George 1 guest appearances First Receptionist 1 guest appearances Woman at Party 1 guest appearances Popeye 1 guest appearances Diver 1 guest appearances Diver 1 guest appearances First Nurse 1 guest appearances Intern 1 guest appearances Man on Beach 1 guest appearances Second Receptionist 1 guest appearances Third Receptionist 1 guest appearances Ambulance Driver 1 guest appearances Test Lab Assistant 1 guest appearances Habitat Technician 1 guest appearances Second Nurse 1 guest appearances Intern 1 guest appearances X-Ray Technician 1 guest appearances Boy on Beach 1 guest appearances ⇤ « 1 2 3 4 5 6 7 8 » ⇥