"Of all the angels, the Valkyr are the most aggressive, short-tempered, and rowdy Seraphs. They were created solely for battle, and in battle they have honed their skills for thousands of years; fighting the eternal wars and battles of their Patron Deities. But with the destruction of the White Heavens and the death of the Old Gods, the Valkyr have finally been released from their immortal lives, and can finally live a life of mortality; with all its exciting, mortal risks.
Unlike most Seraphs, Valkyr possess heavy, metallic wings, which are unsuitable for flight. Instead, their wings become a durable shield, or a second weapon during a fight. Some Valkyr even choose to rid themselves of one wing, to improve their swiftness in battle."