character - Dr Dickenson

character - Professor Ed Woodman

character - Lt. Pol Treidum

character - Captain Gardiner

character - Errol Baumann

character - Carl Sexton

character - Buzz

character - Gorman

character - Jonathan Bromley

character - Grant's Father

character - Phil Buchanan

character - Harry Grant

character - Cooper

character - Ben Thompson

character - Bill Hayden

character - John Meadows

character - Tewson

character - Reg

character - Dowie Steed

character - Lt. Pol Treidum (uncredited)

character - Dixie Hart

character - Stanley Phillips