Wallace has appeared in three films in his acting career, portraying his father at a young age in the biopic Notorious, appearing alongside Will Ferrell in the 2010 comedy Everything Must Go, as well as starring in the 2016 film Kicks.
On July 17, 2017, it was announced that CJ will join as a series regular in the third season of the MTV slasher television series Scream. He will star in the role of Amir.
