Pan is the Greek god of fields, woods, and flocks. He is also closely associated with male virility, and in many works of art and stories he is depicted in a very sexualized way. The Romans worshiped Pan as Faunus. In Greece, worship of Pan was centered in Arcadia, which is said to be the place that Pan was born.

According to legend, Pan is the son of Hermes and a nymph, and he was particularly beloved of Dionysus. In his role as god of the fields and woods, Pan took special care to watch over the olive trees and the grapevines, and he was also a beekeeper. As god of the flocks, Pan looked after shepherds, goats, and sheep.

Pan's appearance is quite distinctive. He was born with the legs, horns, and ears of a goat, with a human torso, head, and arms. Pan is often depicted playing a pipe known as a syrinx, and in most accounts he is a fan of music, dancing, and merrymaking. However, Pan is also a highly changeable god, with violent mood swings which could make him angry or irritable in a flash, especially when he is woken from a sound sleep.

In many tales, Pan is shown chasing after various nymphs, particularly Echo, whom he was apparently in love with. He is also said to be responsible for irrational bouts of fear and distress among crowds and herd animals, along with solitary individuals. In fact, the modern English word “panic” is rooted in Pan.

In Greek art, Pan is often depicted in parties and gatherings, sometimes playing his syrinx and dancing, and sometimes serving food from the fields he looks after. Pan is also depicted in works of art which show shepherds, as he was viewed as a sort of mentor to the shepherding community, looking after shepherds and teaching them various useful skills.

Many historians have noted that depictions of the Devil in Christian art bear some suspicious similarity to depictions of Pan. In the early Christian world, undoubtedly Pan and Faunus would have been regarded as figures of evil, since they promoted sexual frolics and other behavior viewed as unsavory by the Christians. In an attempt to stamp out paganism, the Christians may well have linked Pan and the Devil, in the hopes of encouraging pagans to turn to the path of Christianity.