Many people get excited about owning a Gargoyle. They are like, look I have me a Gargoyle or something crazy. The thing is they don't even know what they really are or what they can do.
Saint Romanus took a crucifix to one and made it bow to him and become a white light creature. This doesn't mean that all of them are like that, just the ones placed inside of concrete that decorate the churches of today and yesterday.
This Gargoyle is a free form creature. He does as you direct him to. This is a dual piece and to activate him/ bond with him you would name him.
What can a free form Gargoyle do? They can attack others, protect you, gather for you and assist you in magical practice.