Marcus Alvarez is the no-nonsense leader of the sometimes rival Mexican-American gang, the Mayans. Like the Sons' leader, Clay, he has no desire for their clubs to be drawn back into their war of the 90s, so he is often open to collaboration, when he's not busy trying to double-cross or kill the Sons.The Mayans are the primary drug runners for northern California, trafficking in heroin and meth, and some prostitution. Marcus is cold, calculating and absolutely ruthless, putting business above everything, even family ties. When the series begins, the Sons and Mayans are attacking each other, but their relationship evolves, often drawing the rival black gang, the Niners, into their fray.Background: Was released from Chino before the start of season one. Marcus is married to Diana Alvarez and has a son, Esai, and a daughter, Tessa.