Thortan started playing basketball from Kilgore College and he played about two years as a junior player. At that time he scored 14.5 points while shooting 65 percent from the field and averaged 26.9 points in the second season of Kilgore college.
Following Marcus appointed to the New Orleans Hornets, one of the NBA draft clubs in 2009 where he scored 4.5 points, 2.9 rebounds, 1.6 assists and 25.6 minutes per game in 73 games for New Orleans team.
In 2011, Terell was selected by Sacramento Kings where he played for about 3 years and scored high-score of his career, 42 points against the Golden State Warriors on March 14, 2011.
After that Terrell Thornton joined Brooklyn Nets in 2014 instead of Jason Terry and Reggie Evans, where he scored 27 points in a win over the Kings. Following he played for various basketball teams including Boston Celtics, Phoenix Suns, and Houston Rockets.
Marcus is active on Instagram, Twitter, and Facebook. He has 46.3K followers on Twitter and 21.7K followers on his Instagram account and often posts pictures on the social networking profile.
Looking at his personal life, Thornton was dating girlfriend, Lyndsey Duplessis, with whom he later engaged. Later his fiancee gave birth to a daughter, Maleia on January 1, 2016, and Thorton is also a cousin of former NBA player Al Thornton.
Being a basketball player Terrell Thornton has featured in various national games from which he collects a big chunk of money. As of 2017, his estimated net worth is above $58 million through which he finances his living and lives a celebrity life.