Gargoyle

Gargoyles are stone demons that were placed at Baldr's temple Breidablik by Arkana and Zenobia Sadi Freile. They can only be brought to life with the formation of a nest, their source of magical power. Once the source of magic is destroyed, the gargoyles will return to their original stone state.

In RO, Gargoyles are lesser demons with large, wide wings on their backs. Attacks travellers from the sky using a bow. They bear no resemblance to the gargoyles from the manhwa.

Trivia

 * Gargoyles are an architectural element that draws water from the roof and away from the building.