Also known as Voice, he is the twin brother to Noyz. Boyz is an impulsive young demon with only one wing. He is in love with Kurai; he rejects Setsuna partly out of jealousy, and partly because he despises all angels and humans. Boyz is responsible for the death of Setsuna's human body; he accidentally removes the Nanatsusaya from his chest, forcing Setsuna's soul to return to Alexiel's preserved body. Boyz loses an arm during a violent scuffle with Michael, and grudgingly accepts Setsuna as the savior after he saves his life. He is given an artificial arm, but is killed by Arachne after he stumbles upon her shrine to Lucifer.