Marcus was born and raised in Howard County, Maryland. His parents’ divorce at four years old left him with a lot of psychological trauma, which would later lead to his enrollment in tackle football at the age of 7. Marcus attended Mount Saint Joseph's High School, where he played both basketball and football. He was a member of the 2011 BCL championship team and also received 1st team All-MIAA and 1st team Private School All-State honors in 2011.
In 2012, Marcus suffered a lisfranc fracture his senior season. Despite the severity of his injury, he was still fortunate enough to receive a scholarship to play D1-AA football at Saint Francis University, where he was a member of the 2016 NEC championship team. In May of 2015, he graduated from Saint Francis with a major in Management Information Systems and a minor in Cyber Security Administration.
In September 2018, he was diagnosed with several underlying mental illnesses, which he was dealing with for a decade. This put Marcus in a dark phase, but it helped him find his purpose in life.
A year later, Marcus founded Alston for Athletes (AFA), a sports mentoring program that emphasizes mental health awareness. AFA’s goal is to partner with local middle schools and colleges to provide mentorship to the younger generation of student-athletes who are struggling. Due to Marcus’ advocacy efforts, he was nominated to Mental Health America’s 1st Young Mental Health Leaders Council in September 2020. Outside of AFA, Marcus is passionate about comics, esports, and sports cards.