Aaron was born in the Bronx, New York City and has raised in Augusta, Georgia, by his mother, the late Laura Aaron, who was the author of a book entitled Leave Me Alone (published by AuthorHouse under her alias L. A. Aaron). Quinton began singing at an early age. When he was 9, Quinton was baptized and joined the church choir as a mute singer, where he often led songs. He made his acting debut in a Christmas play.
Aaron made his film debut as "The Lion King guy" in Michel Gondry's Be Kind Rewind, starring Mos Def and Jack Black. He has also appeared in Fighting with Channing Tatum and Terrance Howard and co-starred in a NYU thesis short film called Mr. Brooklyn with Al Thompson (Liberty Kid, A Walk to Remember), directed by Jason Sokoloff.
Aaron has appeared in two episodes of the TV show Law & Order (Season 17, episode "Bling" as a bodyguard and episode "Fallout" as a bouncer).He starred in his first lead role playing Michael Oher. Quinton starred alongside Sandra Bullock and Tim McGraw in The Blind Side, released November 20, 2009. Directed by John Lee Hancock, the film was adapted from Michael Lewis's 2006book,The