He experienced the most successful period in his career with his first club Colo-Colo, where he was part of four league championship winning squads.
[1] In 2001, Margas gained notoriety for disappearing from England without a trace and many weeks passed before he was found in his home country,[2] having effectively retired from football.
Since retiring from football, Margas has worked as a youth coach at Colo-Colo, appeared on a reality TV show called Expedición Robinson, ran his own business, and bought former dictator Augusto Pinochet's armoured car.
[4] His daughter, Catalina, was a Chile international footballer at under-17 level and took part in the 2008 South American U-17 Women's Championship.
[5] His son, Luis, is a central defender from the Santiago Wanderers youth system and was called up to the first team in May 2023 at the age of seventeen.