The Green Man by Emily Blaviet. The Green Man is a legendary pagan deity who roams the woodlands of the British Isles and Europe. He usually is depicted as horned & peering out of a mask of foliage, usually the sacred oak. He represents spirits of trees, plants and foliage. It is believed he has rain making powers to foster livestock with lush meadows. He was frequently depicted in medieval art, including church decorations.