This is an image of Perseus holding up the head of Medusa in which he used a shield in order to face a mythical monster. It also provides some details into what Perseus symbolizes. If you click the image it brings to Olympians Rule a website dedicated to the education of people on the Greek Pantheon of the gods and the mythology that goes along with them.
(Ancient Greek: Πήγασος, Pégasos, Latin Pegasus) one of the best known mythological creatures in Greek mythology. He is a winged divine horse, usually depicted as white in colour. He was sired by Poseidon, in his role as horse-god, and foaled by the Gorgon Medusa. He was the brother of Chrysaor, born at a single birthing when his mother was decapitated by Perseus. Greco-Roman poets write about his ascent to heaven after his birth and his obeisance to Zeus, king of the gods.
Medusa (Greek: Μέδουσα "guardian, protectress") | In Greek mythology Medusa was a monster, a Gorgon, generally described as having the face of a hideous human female with living venomous snakes in place of hair. Gazing directly into her eyes would turn onlookers to stone. Medusa was beheaded by the hero Perseus, who thereafter used her head, which retained its ability to turn onlookers to stone, as a weapon until he gave it to the goddess Athena to place on her shield.