Marsai Martin (born August 14, 2004) is an American actress, singer, and producer. She is known for her role as Diane Johnson in the ABC comedy series Black-ish. She is set to star and executive produce the 2019 Universal Pictures comedy film Little. Martin was born in Plano, Texas. At age five, she landed her first national commercial, before moving to Los Angeles in 2013.[The following year, Martin was cast opposite Anthony Anderson and Tracee Ellis Ross in the ABC comedy series Black-ish created by Kenya Barris. In 2016, Martin made her film debut playing a leading role in the Amazon Studios original film An American Girl Story – Melody 1963: Love Has to Win set in Detroit during the Civil Rights Movement. In 2018, Martin was cast in her first studio feature film called Little for Universal Pictures. At the age of 13, she became executive producer of film, making her the youngest person in Hollywood to ever produce a movie.