Aegis

Shield of Aegis (シールドオブイージス) is a weapon that can be used by Vexen in Kingdom Hearts 358/2 Days. It is his most powerful weapon. To wield the Shield of Aegis, Vexen must have the Pandora Gear attached.

In the Final Fantasy video game series, the  Aegis Shield is a recurring shield that has appeared in all of the main series, except for  Final Fantasy VII. It usually protects the user from the Petrify status, or has a great bonus to Magic Defense.

In mythology, Aegis was the shield wielded by the Greek goddess Athena, with the image of Medusa's head on the front.