Gary LeRoi Gray (born February 12, 1987) is an African-American actor and voice actor involved with movies, television, and animation. He is most recognized for his childhood role as Nelson Tibideaux, the son of Sondra Huxtable Tibideaux and Elvin Tibideaux on the NBC sitcom The Cosby Show. He appeared on the series during its eighth and final season (1991–1992).
His first Nickelodeon role came as the second voice of Sam Dullard in Rocket Power, replacing Sam Saletta. He was later replaced with Sean Marquette. Gray later replaced Ibrahim Haneef Muhammad as A.J. on The Fairly OddParents in 2003, a role that has been his ever since.