[1] In 1994, when he was three, his mother began a relationship with Sean "Diddy" Combs, who eventually became an informal stepfather to Quincy and raised him as his own.

[3][4][5] For his 16th birthday, Diddy and Porter threw Quincy a celebrity studded party in Atlanta that was featured on MTV's My Super Sweet 16.

[8] In June 2015, Quincy made his directorial debut with the music video for singer and actress Elle Winter's song No Words.

[11] Also in 2016, he collaborated with the U.K fashion brand BoohooMan for their Autumn/Winter capsule collection and was the face of the campaign [12] On Valentine's Day in 2017, Quincy released his first E.P entitled "This Is For You".

[15] Quincy had a recurring role in the 2021, television drama Power Book III: Raising Kanan.

[16] Also in 2021, he was in the campaign for Montblanc and Maison Kitsuné's capsule collection and was used by Lacoste for the brands promotion of its L001 sneaker launch.

[20][21] He also has a watch line called Chalk by Quincy,[22] a jeans collection with Embellish and a start-up technology company.