His award-winning films includes The Flor Contemplacion Story, Sidhi, Deathrow, Hubog, Aishte Imasu 1941, Blue Moon and Mano Po.
As an actor, Lamangan is best known for portraying the villain turned funny anti-hero Roda in Kapamilya Channel teleserye FPJ's Batang Quiapo.
He started production for the next Sine Novela: Una Kang Naging Akin starring Angelika dela Cruz, Wendell Ramos, and Maxene Magalona.
[2] Lamangan will direct an original musical titled "Katipunan: Mga Anak ng Bayan" and it will star actors Sandino Martin and Anna Fegi.
[3] The show toured in August and September 2013 around provinces of Manila to celebrate the 150th anniversary of the birth of Philippine hero, Andres Bonifacio.
[5] He was among the organizers of the ML50 campaign in 2022, through which a series of activities were held to commemorate the 50th anniversary of the declaration of martial law under the dictatorship of Ferdinand Marcos.