Charly Mattei is a fictional character from the French film "Les Lyonnais," directed by Olivier Marchal. He is portrayed as a former gangster who tries to leave his criminal past behind and lead a more peaceful life. The film explores themes of loyalty, friendship, and the consequences of a life of crime. In "Les Lyonnais," Charly's character is deeply connected to the Lyon criminal underworld, where he faces challenges from old enemies and struggles with his past decisions. The story highlights the complexities of his relationships with other characters, including his former associates and family, as he navigates the dangers of his former life.