Léon: The Killer was a French film directed by Luc Besson. It told the story of a professional killer, Leon (played by Leon Dumont), and his female partner, Mathilda (played by Mathilda Steele). The following are the personalities of the main characters in the movie: 1 Leon Leon was a cold, selfish, and principled professional killer. He took his work very seriously and completed his task by hook or by crook. He didn't like to communicate with people, but when faced with something he was sure of, he would show a firm and decisive attitude. 2 Mathilda Matilda was a kind, brave, and principled girl. She had worked with Leon for many years and had deep feelings for him. Although she knew that her relationship with Leon could bring danger, she still chose to protect herself and him. 3. Alphonse Rezeau Alphonse Retho was Leon's employer, a rich, powerful, and powerful man. He was a hypocritical, selfish, and cruel man. On the surface, he treated Leon and the others very well, but in fact, he had used and tortured these people to the extreme. 4 Max Max was Leon's ex-partner and a professional killer. He was colder and more ruthless than Leon. His mission was clearer and more determined. His actions were more decisive. The director gave the audience a deep understanding of the inner world of these characters by portraying their personalities. At the same time, he also showed the complexity of French society and human nature.