He began his career in Universidad de Chile,[1] then played on a loan in Cobreloa, then in Santiago Wanderers.

[2][3] Muñoz represented Chile at several youth levels, the most important of these is the 2003 South American U-20 Championship, without luck, in the category of Sudamericano of Uruguay.

A part of that team together with Claudio Bravo, Mark González, Mauricio Pinilla, Gonzalo Fierro, Luis Jiménez, Jorge Valdivia, Miguel Pinto, Marco Estrada, Luis Pedro Figueroa, Miguel Aceval and Eduardo Rubio.

[4] On second half 2022, he took his first challenge as head coach in a professional club after joining Santiago Morning in the Primera B de Chile,[5] being released in May 2023.

This nickname was given by his teammate Gamadiel García when he was 21 years old, due to the fact that he had many wrinkles in the face.