The faun is a half-human and half-goat mythological creature appearing in Greek and Roman mythology.

The fauns, more commonly affiliated with the satyrs of Greek mythology than the fauns of Roman, are bipedal creatures with the horns, legs and tail of a goat and the head, torso, and arms of a human, and are often depicted with a pointed ears. These mythological creatures borrowed their appearance from the satyrs, who in turn borrowed their appearance from the god Pan of the Greek pantheon. They were symbols of peace and fertility, and their chieftain, Silenus, was a minor deity of Greek mythology.

Romans believed fauns inspired fear in men traveling in lonely, remote or wild places. They were also capable of guiding humans in need, as in the fable of The Satyr and the Traveller, in the title of which Latin authors substituted the word Faunus. Fauns and satyrs were originally quite different creatures: whereas fauns are half-man and half-goat, satyrs originally were depicted as stocky, hairy, ugly dwarves or woodwoses with the ears and tails of horses. Satyrs also were more woman-loving than fauns, and fauns were rather foolish where satyrs had more knowledge.

https://en.wikipedia.org/wiki/Faun