Caldimir Aleksandrov (カルジミール･アレクサンドロフ Karujimīru Arekusandorofu) the "Blue Flow of Blood" (青き血河 Aoki Chikawa) is a vampire of Russian descent and a Rainbow officer of The Organization. He is a third-rate actor reject and a highly overdramatic man who is easily embarrassed. He sees Gerhardt von Waldstein as his rival, though Gerhardt shares none of his animosity. Caldimir's abilities are certainly unknown. He is apparently powerful in one-on-one fights, but is weak when outnumbered. During Gerhardt's long leave of absence, Caldimir attempts to assume the leadership role in his stead.