The script held in the Crawford Collection in the AFI Research Collection contains the following character notes (excluding regular characters):
'PHILLIP REID: 25/27 Well spoken. Middle class. Able to ride motor cycle. Copies method of stealing learned in Italy. 5'7" to 5'10"
'SAMANTHA YOUNG: 22/24 No dialogue. Good young female face. Long fair hair. Should be able to ride pillion passenger in simple scenes.
'MAMA RUFFINI: 45/50 Italian born. English good. Hotel cook. Able to ride motor cycle ... 5'7" to 5'10"
'GIOVANNI (JOHN) RUFFINI: 20/25 Italian born. English good. Hotel cook. Able to ride motor cycle ... 5'7" to 5'10"
'DONALD MORRIS: 20/25 Australian. Boards with Ruffini's. Working class cook. Able to ride motor cycle. 5'7" to 5'10"
'BILL BROWN: (STAN MARSHALL) 20/25 Australian. Working class. 5'7" to 5'10" Able to ride a motor cycle. More dominant than Green.
'JOHN GREEN: (ALEC MASON) 20/25 Australian. Working class. 5' 5'10" [sic] Weaker than Brown.
'EDWARD FINCH: 45/55 Middle class business man. Well spoken.
'MR. KAVANAGH: 40/50 Commerical traveller type.
'LOSER: 30/40 Young executive type. Few lines.
'MR. FINDLAY: Young. Medium height, need not be able to ride. No lines.
'MR. JOHNSON: Young. As for Findlay. No lines.
'MARIO RUSSO: 35/40 Slight Italian accent. Working class.
'MARIA RUSSO: 30/35. Stronger Italian accent.
'MRS HAWKE: 40/50 Tough working class Australian.
'MRS GIBBONS: 55/66 Frail and small. Pensioner type.
'FIONA: Young. Healthy Australian bird type. Does not have to be able to ride bike.
'LOIS: Young. As above.
'MAN READING NEWSPAPER: 40/60. Working man. No lines.
'PEDESTRIAN: 50/65. Working on pensioner type.'