Designed to be a general-purpose, if beautiful, tool for Kabapu, Ropponmatsu (Unit 1) excels in bomb-disposal. After failing in her first mission, she is given an additional form (Unit 2), that of a perky, young cat-girl. In the original manga, only one Ropponmatsu unit is active at any one time; the reason for this is later revealed to be that there is only one central "core" that is switched between the two bodies. Kabapu attests that the core contains the soul of the princess of the lost civilization of Solaria, and he has had the Ropponmatsu body created to house it as part of his plan to destroy all remaining traces of Solaria's technology. Conversely, the anime (produced before this revelation occurred in the manga), has the Ropponmatsus appearing as two distinct entities who frequently cooperate on important tasks. Although they have a tendency to be destroyed on their missions, Shiouji keeps a lot of spares, which play a large role in the penultimate episode of the series). The vast difference between the units leads to some tension between Kabapu and Shiouji: both incarnations of Ropponmatsu have a tendency to fail in the course of their duty, due either to extreme mass (Unit 1) or lack of appropriate functionality (Unit 2).
She is introduced in episode 3 as an assistant of sorts to the Female Informant from Episode 2. Much like her predecessor, she demands sex with either Rin or Mimi for information. Although, her first encounter with Mimi was less than romantic, by episode 4, they appear to have entered into some sort of relationship. After episode 4, she has apparently died.
One of the dragons of Heaven, a fourteen-year-old schoolgirl descended from the keepers of Mitsumine Jinja, masters of inugami (dog-spirits), Yuzuriha is exceedingly energetic, often diffusing latent tension between Kamui and the rest of the Ten no RyÅ«. Yuzuriha is attended by her own personal inugami, Inuki, who can transform into anything she desires and who only others with occult powers can see. She was teased throughout much of her childhood as her classmates believed Inuki was her imaginary friend. Because of this, Yuzuriha made a vow that she would never fall in love with (or even date) a man who could not see Inuki. However, the first person outside of her family that she meets who can see Inuki is ShiyÅ« Kusanagi—a Dragon of Earth. Yuzuriha falls in love with Kusanagi, regardless of their conflicting fates. In Tsubasa Reservoir Chronicle In Edonis country, she's a player who's paired up with Kusanagi Shiyuu. In Tokyo, she's one of the seven fighters of the Tower faction.
Mrs. Tendo is the mother of Kasumi, Nabiki, and Akane, and the wife of Soun. She passed away many years ago leaving Soun to raise the children. It is never said how she died, but the family still thinks of her lovingly. After Mrs. Tendo's death Kasumi assumed a more motherly role and helped with household duties. (Source: Rumic World)