The script held in the Crawford Collection in the AFI Research Collection contains the following character notes (excluding regular characters):
'TONY SMART Early twenties. Pop star. Masculine, good looking, long hair. Self centred, thinks he "kills the birds", and he does. Drives car.
'PENNY WILLIAMSON Early twenties. His girl friend, one of them. Quite hard, sleeps around, very attractive, gamin.
'BRIAN WILLIAMSON Early twenties. Penny's husband. Runs gift shop. Nice bloke, although with it, has fairly normal ideals. Long hair (not shoulder).
'GRAHAM MALONEY Mid twenties. Smart's manager. Slimey, smart, not good looking, but dresses modern. Long hair. Has to drive a motor-launch.
'DAVID SIMMONS Runs shop with Brian. Good friend, quiet. Long hair, similar to Brian.
'VICKI GAYE Mod. Young writer for pop magazine. Slightly kooky, pleasant, but could wear you down.
'KEVIN BARKER Record company man, thirties, weak, normal middle class. In the wrong game. Goes to parties with young ones attempts to 'swing'. [sic] Has to drive car.
'MRS. BARKER Thirties. Can't accept her husband's attitudes. Suspicious of him, but not without good cause.
'TEA-WOMAN
'SALLY Model, young (non speaking)
'PHOTOGRAPHER Young, with it. (non speaking)'.