In the Mayans M.C. Season 4 finale, " When the Breakdown Hit at Midnight ," EZ Reyes solidifies his dark transformation by taking over as Presidente of the Santo Padre charter, forcing out Marcus Alvarez. The club handles internal threats while dealing with the fallout of a war, culminating in a devastating arson attack on their drug supply. You can find a detailed recap and analysis of the episode on CBR and the Sons of Anarchy Fandom page . Mayans M.C. - 4x10 "When the Breakdown Hit at Midnight"