Characters played by Ray Barrett
Commander Sam Shore
Sub-Lieutenant John Horatio Fisher
King Titan
3rd WSP Commander
Grupa
2nd WSP Commander
Chidora
Chuck
Duke Dexter
Eybron
Fragil
Gadeth
Ilium
Jamie McGregor
Joe
Johnny Swoonara
Maritamis
Power Plant technician
Prescott
Rescue Launch 8
Rigger Jack
Sea Dog
Wasps Drummer
Characters played by Robert Easton
Lieutenant George Lee 'Phones' Sheridan
Surface Agent X-2-Zero
Abu
WSP Commander
1st WSP Commander
2nd WSP Commander
3rd WSP Commander
Andy McGregor
Aquaphibians
Base
Chick Kingsland
Lorado
Philippine Station 178
Professor Darek
Wasps Pianist
Characters played by David Graham
Marineville Tracking Station
Oink
Admiral Jack Denver
Aquaphibian
Doc
El Hudat
Gate Sergeant
Noctus
Nucella
WSP Commander
1st Rigger
1st WSP Commander
2nd WSP Commander
Admiral Frendor
Admiral Henry Carson
Africa 28
Ali Khali
Alien
Andrews
Aquaphibian 1
Aquaphibian 2
Aquaphibians
Captain Jacques Jordan
Carter
Caveman 1
Caveman 2
Check Point 1 Officer
Cromer
Cronson
Engineer Preston
Epayus
Frank
Frank Lincoln
Gerit
Hassan El-Hamrah
Idotee
Jet Squadron Spearhead Leader
Lieutenant Lawrence Gray
Lieutenant Misen
Lorif
Marin
Marinville Tracking Station
Marty
Mike Bromley
Newsreader
Old Caveman
Parasitica
Professor Alexander Cordo
Professor Burgoyne
Professor Graham
Radio Voice
Right Enterance Officer
Sandy Gibson
Search Vessel 2
Security Guard
Shore's Drinking Buddy
Simulator Sergeant
Supply Lieutenant
T.V Presenter
Thompson
Tow Vessel
Toy Fish
Trell
Truck Driver Joe
Turata
Weather Station 7
Zero Red
Characters played by Don Mason
Captain Troy Tempest
1st WSP Commander
Annoucer
Captain Black
Main Gate Sergeant
Mighty Solaster Leader
Missile Unit
Nefir
Rescue Launch 8
Sculpin
Sky Eagle Pilot
Vic Steigo
Characters played by Lois Maxwell
Lieutenant Atlanta Shore
Arago Point
Marinville Tracking Station
Milly Carson
Characters played by Sylvia Anderson
Barry Byrne
Marina
Characters played by Gary Miller
Captain Troy Tempest
Duke Dexer