Eugène Ballanchon, scientific researcher, single
Régine, Mr. Beauchard's spy
Mr. Beauchard, executive secretary linked to a gang
Mr. Granger, director of the scientific laboratory
DST inspector
Father Ballanchon
Mrs. Ballanchon, Eugène's mother
Merchant, spy in the laboratory
Mario
Scholar
Baron
DST inspector
Agent
Fred
Baroness
Pedestrian
Extra worker (uncredited)
Jo (uncredited)
Actor from the western (uncredited)
Police officer (uncredited)
Actor from the western (uncredited)
Minister (uncredited)
Traveler (uncredited)
Actor from the western (uncredited)