Kunzite was the final and strongest of the Shitennō. He led the army when the Dark Kingdom invaded the Silver Millennium Kingdom. In the present his mission was to discover who Sailor Moon was, retrieve the Silver Crystal from her and train Prince Endymion to be a Dark Kingdom Warrior. He was still grieving about Zoisite's death and it was a touchy topic for him. He didn't like the fact that Prince Endymion was replacing him, and he would have bickering fights with him. Even though Kunzite was the strongest of the four, he underestimated Sailor Moon's power and he was destroyed when she released the power of the Silver Crystal and deflected his attack back onto himself.