Amil Gaoul

This powerful entity is the mightiest of the six Key Spirits, initially appearing as a turquoise being capable of wind-based attacks using feathered wings. It undergoes a dramatic transformation, evolving from a phoenix into a humanoid form adorned with golden, feathered armor, culminating in the ability to open its eyes. This supreme spirit is bound to Zed, as both share a mutual desire to end the endless conflicts between nations, making Amil Gaoul's bond with Zed unbreakable unless the spirit chooses to sever it.