Rigel

Sword Sniper Rigel (ソードスナイパー リゲル Sōdo Sunaipā Rigeru) or simply known as Rigel, is the Partner Z/X of Azumi Kagamihara. One day, some strange things happens as Rigel and Azumi were walking, they were struck by a freaking blue-glowing lightning filled with null energy. Thanks to that, Azumi was temporarily knocked out by that lightning. She eventually woke up after, becoming an Omnipotent Supreme Primordial.