PJ Malonzo was initially appointed as
Caloocan City councilor by President
Gloria Macapagal Arroyo on April 1, 2005 after the death of Councilor Eduardo "Popoy" Rosca two months prior. The appointment received pushback by city government officials who had intended to recommend Rosca's daughter Kristen Joy for the position. By May 2005, the Caloocan Regional Trial Court Branch 131 issued a decision indefinitely barring Malonzo from taking the vacant council seat. Malonzo was elected councilor of Caloocan under the
United Nationalist Alliance as part of the electoral team of Mayor
Oscar Malapitan in 2016. On February 17, 2021, Mayor Malapitan filed a cyberlibel complaint against Malonzo and four other councilors due to their accusations that his government procured substandard digital tablets for schools from a company named Cosmic Technology Inc. By June 2, 2021, Malonzo and fellow councilors Marylou Nubla and Alexander Mangasar filed a graft complaint before the
Office of the Ombudsman against Malapitan and
Education Undersecretary Alain del Pascua among others. On September 20, 2021, Malonzo joined the
Aksyon Demokratiko party alongside Congressman
Edgar Erice and five other councilors. In 2022, Malonzo attempted to run for vice mayor with mayoral aspirant Erice, but lost to fellow councilor Karina Teh. On October 3, 2024, Malonzo filed his certificate of candidacy for Caloocan vice mayor, as the running mate of former senator
Antonio Trillanes IV in the
2025 mayoral election. However, he lost the vice mayoralty race once again to Teh. ==Filmography==