ABSTRACT: The plurality of criminals over time has evolved, so that today we have a natural plurality, constituted plurality, occasional plurality or criminal participation. Thus, within the criminal participation, the accomplices carry out a secondary activity in the sense of facilitating, helping or promising the perpetrator (co-perpetrators) who commit the act directly. This activity of the accomplice takes place before or at the same time as the commission of the criminal act. In judicial practice, the modalities of complicity (previous, concomitant, moral, and material, negative) in which a person intentionally facilitates or helps the perpetrator to commit a criminal act have been shown. KEYWORDS: plurality, criminal participation, complicity, authors, co-authors, Criminal Code