[3] Alvarez was born in San Juan, By his late teens, he became interested in acting, and made his debut as an actor, in 1978, joining the theatrical company of Argentine playwright Carlos Ferrari.
[2] Alvarez debuted as an actor in a play named "Puerto Rico Fua", where he acted along with Pedro Juan Texidor, Magali Carrasquillo, Luis Oliva, Edgardo Huertas and others.
[2] In 1980, Alvarez debuted on Puerto Rican television, acting as "Danny" in "Ariana", a telenovela in which Gladys Rodriguez and Arnaldo Andre of Paraguay starred.
[2] Soon after, Alvarez acted in "El Idolo" alongside Venezuela's legendary singer Jose Luis Rodriguez and Cuban-Puerto Rican actress Marilyn Pupo.
Recognizing that his status as a teen idol was not going to last forever, Alvarez wanted to keep furthering his career, so he dedicated himself to acting both on stage and on television as a way to keep learning his craft.
Early in 1984, Alvarez acted in "Diana Carolina", where he shared credits with stars, Guillermo Davila of Venezuela and Puerto Rican actress Ivonne Goderich.
[2] Alvarez immersed himself in theater acting when he returned to Puerto Rico, including 2001'a "Amor, Valor y Comprension y una Gozadita" ("Love, Valor and Understanding and a Small Joy") and "En Pelotas" ("Naked"), 2003's "Historias Desesperadas del Camerino" ("Desperate Stories off the Dressing Room"), 2005's "El Crimen del Padre Amaro" ("Father Amaro's Crime") and "Dito, Tan Bueno Que Era!"