Is Sicario true? Asked by Cristian McKay Is Sicario Based on a True Story? No, ‘Sicario’ is not based on a true story. Villeneuve made the film from a script provided by Taylor Sheridan, who did not have any writing credit before this. Michaela Harris, BA Contributor 4.9/539 ratings Rate this answer Leave your comment You may be interested inWhat happened to Alejandro daughter in Sicario? Del Toro plays the role of Alejandro, a mysterious Colombian agent. When we met the character in Sicario, the first movie, he was a man that was set on revenge. We knew that his wife,…In sicario who is alejandro? Alejandro Gillick was a tax inspector and prosecutor in Juarez, Mexico until the brutal murders of his wife and daughter. Subsequently, he became a "sicario," or assassin, for anyone willing to employ him against the…Why is Alejandro called Medellin in Sicario? 2 Answers. Medellín refers to the Medellín Cartel, which was a Colombian drug cartel that operated from 1972-1993 and was probably the largest ever to have existed.