Power is a Devil Hunter. She is a fiend, or a Devil in a human's body, and is forced to work under the Devil Hunters, or else she will be killed. Power can freely manipulate the blood in her body to form weapons. She can also manipulate other people's blood through direct contact and can prevent them from bleeding out. When making weapons with her blood, it'll spurt out of her forearm, immediately forming into the weapon of her choice. She often makes a hammer or a spear out of her blood.