Main Characters Captain Steve Burton 40 main appearances Mark Wilson 40 main appearances Dan Erickson 40 main appearances Valerie Ames Scott 40 main appearances Alexander Fitzhugh 40 main appearances Barry Lockridge 38 main appearances Betty Hamilton 33 main appearances
Recurring Guest Characters Bryk 1 guest appearances Tagor 1 guest appearances Janitor 1 guest appearances Joe / Logar 1 guest appearances 1st Giant 1 guest appearances 2nd Giant 1 guest appearances Giant Guard 1 guest appearances Convict 1 guest appearances Senior Scientist 1 guest appearances Assistant Scientist 1 guest appearances Janitor 1 guest appearances 1st Cop 1 guest appearances Policeman #1 1 guest appearances Cop #2 1 guest appearances Delivery Boy 1 guest appearances Major Kagan 1 guest appearances Giant Watchman 1 guest appearances Marna Whelan 1 guest appearances Giant Scientist 1 guest appearances 1st Scientist 1 guest appearances ⇤ « 1 2 3 4 5 6 7 8 9 » ⇥