Gregorio Cortez or simply known as Greco Cortez, is the Main titularly protagonist since Probinsyano who is a former Pulang Araw member known for his nom de guerre "Greco". He was the extended member of the Pulang Araw hired by Leon, following Cardo's Vendetta and joins a policeman as now part of PNP's Task Force Agila. He is not blood-related to Lily Ann Cortez.
He is also portrayed by the Filipino voice actor, Sancho Delas Alas.
He is seems to be Misguided to Delusion his attacks, use to gets his brains Bullies.