Greek MythologyIn Greek mythology, the goddess Athena gave the hero Perseus a reflective mirror-like shield (Aegis), to help him fight and kill Medusa.
In God of War II
In God of War II, Perseus used the shield in his fight against Kratos, after Kratos had destroyed his helmet. With the shield, Perseus reflected the sun's rays, and momentarily blinded Kratos. The shield was also able to withstand some of Kratos' melee attacks. The shield is Perseus' final defense in battle, after Kratos destroyed both his helmet and sword. However, it is not able to block as well as when it was aided by the sword, and thus forces it's wielder back when struck.
God of War: Ascension
The Sheild of Perseus appears in the multiplayer mode of God of War: Ascension, it is present in the Bog of the Forgotten stage and is used to awaken the gorgon Stheno. During the match the gods will intervene and the shield will appear on one of the pedestals located around the map, warriors have to first find the shield and them pull it from the ground (this process can be interrupted); after the Sheild has been obtained the warrior can use it in battle (it works like a regular secondary weapon) and can awaken Stheno. To release the gorgon, the champion must stand underneath her gaze and reflect the beam back at the beast. The shield disappears when she is awoken.
- Perseus was the one who killed Medusa in original Greek mythology, however, Kratos did the task in the first game, so, it is odd that the shield had a head that resembled Medusa's imprinted on it, as Perseus does not have any relation with the creature in the God of War universe.