Irene Urzaiz  

, イレーネ・ウルサイス

This individual is a student at Le Wolfe Black Institute. She is Priscilla's older sister. Her personality can be described as violent and cynical, with a tendency to cause trouble. This person possesses an Ogre Lux known as Gravisheath, which has the ability to manipulate gravity and alter the user's body for optimal use of the weapon. However, this comes at a cost: her own blood is required to maintain its power.