Article 177 Revised Penal Code
Article 177 of the Revised Penal Code is about Usurpation of authority or official functions. It is under Chapter Two (Other Falsities) of Title Four (Crimes Against Public Interest) of the Code.
Usurpation of authority or official functions
Any person who shall knowingly and falsely represent himself to be an officer, agent or representative of any department or agency of the Philippine Government or of any foreign government, or who, under pretense of official position, shall perform any act pertaining to any person in authority or public officer of the Philippine Government or any foreign government, or any agency thereof, without being lawfully entitled to do so, shall suffer the penalty of prision correccional in its minimum and medium periods.
See also: Article 176 Revised Penal Code