CJ Jones is an American actor residing in Los Angeles. He is one of the subjects of See What I'm Saying:

The Deaf Entertainers Documentary. Jones made his feature film debut with Edgar Wright's Baby Driver, in which he portrays Joseph, the deaf foster father of Ansel Elgort's protagonist.

CJ was born in St. Louis, MO, one of seven hearing children born to Deaf parents who communicate in American Sign Language. At age 7, he contracted spinal meningitis and consequently lost his hearing. Possessing a zest for life and commitment to giving, CJ’s dedication to the betterment of the Deaf Community grew into a passion.

CJ created the Na’vi Sign Language (NSL) for James Cameron’s highly anticipated Avatar 2 and will introduce the world to NSL as part of the film’s promotional campaign.

Youtube.