Mary Joy Apostol
Mary Joy Apostol is a Filipino actress who is aside from Birdshot known for her role in Hospicio. Maya is a young girl whose father wants to teach her to shoot to be able to protect herself. She dreams of a better life than that on a secluded land. She is the main protagonist of the movie and her illegal killing of an endangered eagle sets off the plot.
John Arcilla
John Arcilla is a Filipino actor and environmentalist known, aside from Birdshot, for his role in Heneral Luna. Mendoza is a senior officer who knows the workings of the police force and that they don't always follow the righteous path.
Arnold Reyes
Arnold Reyes is a Filipino actor known , aside from his role in Birdshot, for his role in the movie Squalor. Domingo is introduced as a righteous and naive new police officer. His naïveté soon disappears as he begins to realize the reality behind the job and the dangers of wanting to uncover the truth.
Manuel Aquino
Manuel Aquino, more known for his nickname Ku, is a Filipino actor who, aside from Birdshot, made appearances in The Killer Bride and Meteor Apocalypse. Diego is a father who wants the best for his daughter. He wants Maya to learn how to shoot to protect herself, knowing what dangers lurk beyond the borders. He dies at the end protecting her.