Rei Sakuma is a 20 year old man with black wavy hair growing up to his shoulders and a pair of crimson eyes. He speaks like an old man. He shows a great interest in humanity. He's an idol who performances is tender yet powerful. He can be quite flirty at times. He has a younger brother named Ritsu who he loves very much. He is a vampire who hates blood. His members from UNDEAD are named Kaoru Hakaze, Koga Oogami, and Adonis Otogari. He is in love with a woman named Miyuri Kurosaki.