Stephan Derrick (voice)
Harry Klein (voice)
Arno Hello (voice)
Dr. Zark (voice)
Tina (voice)
Mrs. Schmutz (voice)
Linda (voice)
Secret Weapon (voice)
Elfriede Mitzenheim (voice)
Falk (voice)
Frank (voice)
Mother (voice)
Sister Domina (voice)
Dr. Ingeborg (voice)
Policeman (voice)
Arno Hello in Contest (voice)