as Curtis
as Sgt. Jack Matthews
as Narrator (voice)
as Scott Dodd
as Titanium Man (voice)(1 ep)
as Vice Chancellor
as Gordon(2 eps)
as Dr. Graham
as George Kennedy
as Harry McDonald(1 ep)
as Cyril Vickers
as Jim Fletcher(335 eps)
as Samuel Firbeck(13 eps)
as Philip Henderson
as Steven Slater