Big Boy (born Gustavo Roy Diaz on March 11, 1975) is a Puerto Rican reggaeton and hip hop rapper. He is considered one of the founding fathers of reggaeton in Puerto Rico. He is known for his worldwide success in the '90s, with songs such as "Mis Ojos Lloran Por Ti", "Maria", "He Chocado Con La Vida", "Que Vayas Con Dios" and "Mi Chica De La Voz Sensual".