Brunestud of the Crimson Moon (朱い月のブリュンスタッド, Akai Tsuki no Buryunsutaddo?), also called Crimson Moon (朱い月, Akai Tsuki?), is the Ultimate One of the Moon (月のアルテミット・ワン, Tsuki no Arutemitto Wan?), classified as the Type-Moon (タイプ・ムーン, Taipu Mūn?) Aristoteles.