Marco Antonio Caponi at the end of high school he decided to study to be a physical education teacher, but then dropped out of the degree.
In 2007 Marco Antonio Caponi began a relationship with actress Carolina Barbosa and since 2009 they lived in the neighborhood of Palermo, Ciudad de Buenos Aires, Argentina.
In the year 2014 he stars, replacing Walter Quiroz in the musical comedy Y un día Nico se fue with Tomás Fonzi.
From January to March 2015 he stars alongside Inés Estévez and Alberto Ajaka, the work Another lifestyle by Noël Coward in the Teatro Tabarís.
In November 2015 Marco Antonio Caponi is part of the work Pequeño circo casero de los hermanos Suárez by Gonzalo Demaría and directed by Luciano Cáceres in the Centro Cultural San Martín.