At the age of 23, in 1968, Guerrero joined the Instituto Superior de Enseñanza Radiofónica (ISER), a school for prospective radio announcers in Argentina.
[4] Guerrero was a prolific actor; apart from those telenovelas, he also acted in the youth-oriented telenovela Por Siempre Amigos ("Friends Forever"), featuring Puerto Rican boy band Menudo, (which at the time had Ricky Martin as a member); in Alta Comedia ("High Comedy"); Pablo en Nuestra Piel ("Paul Gets Under our Skin"); El Teatro de Diego Vittori ("Diego Vittori's Theater"); Quiero Gritar Tu Nombre ("I Want to Scream Your Name"); Esta Puede Ser tu Historia ("This Could be Your Story"); El Gran Amante ("The Great Lover"); and Matrimonios y Algo Mas ("Marriages and Something Else").
[5] He also had a long theater acting career, which included plays Aplausos ("Applauses"), El Andador ("The Walker"), Mateo, Es Mas Lindo Con Amor ("It's Prettier With Love"), Una Zulma y Dos Adanes ("One Zulma And Two Adams"), Unas Piernas Con Historia ("Legs With Miles on Them"), Cena de Matrimonios ("Married Couples Dinner"), Estrellas de Mar ("Sea Stars"), Cuando Adan Perdio la Hoja ("When Adam Lost the Leaf"), Una Noche a La Italiana ("An Italian-Style Night"), Novio por Diez Dias ("Boyfriend for Ten Days"), Usted no es Greta Garbo ("You Are Not Greta Garbo") and Mi Viudo Tiene un Marido ("My Widower Has a Husband").
[5] His film career consisted of five Argentine film productions: El Bromista ("The Joker"), Brigada Explosiva Contra los Ninjas ("Explosives Brigade Against Ninjas"), La flor de la mafia ("Flower of The Mafia"), Un Elefante Color Ilusion ("An Illusion Colored Elephant") and Micaela, Una Pelicula Magica" ("Micaela, a Magic Movie").
[8] Upon learning of Guerrero's death, his Yo Se Que Mentia co-star Iris Chacon declared that "His passing causes me profound sadness because he was an excellent co-worker.