Larry Kent
Toni Morrell
Carter 'The Shark' Collins
Capt. Samuel Cuttle
Roderick Gridley
Dr. X
Nurse Zanya
Prof. Gault
Dreer (Mole-Men Leader)
George Brennan Westmore (Editor)
Saltwater Jerry [Chs.1,4-7,13-15]
Hawkins (the Butler) [Chs. 1-3]
Det. Jameson [Chs. 4-7]
Paul Thorndyke [Ch.1]
Capt. Tom Stanton, alias Capt. Tom Faxton [Ch.1]
