Jeff Tracy / Professor Wingrove / NTBS Reporter / Crane Chief (voice)

Lady Penelope Creighton-Ward (voice)

Scott Tracy (voice)

Virgil Tracy (voice)

Alan Tracy / Bill Craddock / 2nd NTBS Reporter (voice)

Gordon Tracy / Parker / Brains / Dave Clayton / Frank / Chuck / Policeman (voice)

John Tracy / Allington Bridge Controller / Kirby / Dr R. G. Korda (voice)

Tin-Tin Kyrano / Grandma Tracy (voice)