Michael Roa Valdamjong (ミハイル・ロア・バルダムヨォン, Mihairu Roa Barudamuyōn?) is the main antagonist of the Near-Side Moon routes of Tsukihime. He is a vampire and a numberless Dead Apostle Ancestor ranked as "Extra" outside of the regular twenty-seven because they consider him to be a heretic who does not uphold the ideals of regular vampires. He is called The Serpent of Akasha (アカシャの蛇, Akasha no Hebi?) and The Infinite Reincarnator (転生無限者, Tensei Mugensha?), which refers to his ability to constantly reincarnate after entering Akasha, the root of everything within the universe, no matter how many times he dies. His seventeenth incarnation is known as Elesia (エレイシア, Ereishia?), and his eighteenth incarnation, SHIKI Tohno (遠野 四季, Tōno Shiki?), is his latest as of the time period of Tsukihime.