Reyes came to substitute Xavier Serbia on the band, and joined the band right in the middle of Menudo's golden era.
Reyes ammased great popularity among Menudo fans, although he was known as the chubby one of the band. He was considered that because when he joined Menudo, Edgardo Diaz put him on a strict diet, and the fact he was in a diet was leaked out to all gossip magazines, who published the information immediately.
Ray's first album with Menudo was A Todo Rock, where he sang Si Tu No Estas and Chicle De Amor. He continued through the time when Menudo had the number 1 hit Indianapolis and when Menudo started making it to the covers of Tiger Beat and other major teen magazines, and also when Menudo became famous in the Philippines and Japan.
Ray left Menudo after Evolution was released. He later joined former Menudos Rene Farrait and Johnny Lozada in Proyecto M, once again substituting Serbia. Proyecto M went to enjoy great success in Puerto Rico and Venezuela.
Ray got married and has a family. He joined some of his former Menudo bandmates as well as Farrait and Lozada in 1998 for a concert named El Reencuentro in San Juan. The concert did so well, they had to add two more San Juan dates that weekend and then went on a worldwide tour.
Ray is very good about meeting his fans and signing autographs for them.