Gargoyle

A Gargoyle is a statue creature meant to ward off evil.

In their resting state, mortals know them as stone monsters on the roofs of churches and castles that serve as ornate designs, this is in their resting state. They come alive when great forces of evil approach, and their protective power is incredibly strong.

When the Source surfaced to find Paige Matthews and stop the Charmed Ones from being reconstituted after Prue's death, some gargoyles were notified of his presence. Cole Turner heard Gargoyles while searching for information and running form bounty hunters, and warned Phoebe and Piper that this was a sign the Source was near. Later, the Source tried to enter a church the Charmed Ones were inside of, but the gargoyles protecting it came to life and were able to overpower him with their cries, sending him painfully retching to the ground. ("Charmed Again")