Born in Santo Domingo, Dominican Republic and son of renowned master painter Guillo Pérez, Willy studied art at Universidad Autonoma of Santo Domingo, Candido Bido Art Center, the Art Student League in New York and is a member of the Dominican School of Artists (CODAP). 

With 30-plus years in art and educational work, 27 solo exhibitions and over 50 group exhibits of his work, and many awards in national art competitions, Pérez is currently director of the Art School Guillo Pérez, founded in 1984. He also works as a clinical psychologist.

​His works can be found in private collections, galleries and public institutions.