Cyclops
A cyclops is a monster in Greek Mythology and later Roman Mythology, that only has one eye in the middle of it's forehead. The name means "round eye" and "circled eye". Hesoid wrote about the three one-eyed cyclopses who were the sons of Uranus and Gaia, and brothers of the Titans, while the epic poet Homer saw a group of mortal herdsman getting attacked by a cyclops.