He attained Bachelor of Science in Business Administration at University of Santo Tomas and both primary and secondary education at Notre Dame of Greater Manila.

Instead, his brother Rex Gatchalian won 2013 Valenzuela local elections as mayor of the city.

[citation needed] On July 10, 2020, Martinez voted to reject the franchise renewal of ABS-CBN together with Valenzuela's 1st district representative Wes Gatchalian and 68 other congressmen.

[5] On October 6, 2020, Martinez was removed as chairman of the House committee on youth and sports development.

[9] Upon being term-limited as representative, Martinez filed his candidacy to run in the 2025 Senate election as an independent.