"The Poet" is Lamia's resident wannabe gentleman. As his name suggests he is very fond of poetry and likes to recite them at any time given, and much to everyone's dismay, he happens to recite them or make his conversation into a rhythmic banter pretty much any time he opens his mouth. Graham seems to be the only one who appreciates his poetry. (Source: TV Tropes)
Doi's landlord, who considers him a troublemaker. He's been known to try to renting out Doi's house to other people during terms when Doi stays at the academy. He also doesn't know about Doi and Kirimaru's identities as ninjas, and they work hard to keep it that way.
The eponymous devil of the Devil Ring. In the past, he was the last King of the Shang Dynasty, King Zhou of Shang, Dixin.
A character introduced later in the series, the Spreader of Darkness is a young-looking man who was injured by Kane's grandmother ten years ago, and has been resting and healing for the past 87,016 hours inside of a capsule. He has the power to see into one's mind and to control one's will, as well as the ability to wield a psi-blade. Kane declares him as his arch-nemesis. He is actually the clone of Stargazer, the head of Nightmare. In episode 25, he summons Millie to kill Kane, revealing to her that the two are related and that her real name is "Millennium Feria Stargazer."
A mystrious magical goddess who has a mission to cleanse evil spirits away and helps people in need. She has an afro and a long broom. Kind of a klutz, she accidentally bumps or tips the piled-up garbage and falls on her, which she lost her memory from shock according to Naomi Hoshina, who took care of her. She recovered her memory when one of the robotized, sphere-shaped garbage collectors, which it was possessed by an evil spirit, discharged an old T.V. set at her, knocking her down almost senseless. Later, she cleanses the evil spirit from the robot by using her magic, when it was about to harm Riku, Tsukasa, and Mina. http://en.wikipedia.org/wiki/Tokimeki_Memorial_Only_Love