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 S.I.D. Inspector Kobick 9 guest appearances S.I.D. Man 2 guest appearances Gorilla 2 guest appearances Dr. Brulle 2 guest appearances Giant Female Assistant 1 guest appearances Giant Boy 1 guest appearances Giant Entomologist 1 guest appearances Lieutenant Grayson 1 guest appearances Titus 1 guest appearances Jodar 1 guest appearances Zurpin 1 guest appearances Hook 1 guest appearances Lobo 1 guest appearances Cabin Policeman 1 guest appearances Curator 1 guest appearances Museum Policeman 1 guest appearances Akman 1 guest appearances Granddaughter 1 guest appearances Tramp 1 guest appearances Giant Photographer 1 guest appearances ⇤ « 1 2 3 4 5 6 7 8 9 » ⇥