Ashura-ou is first introduced as the god of war and guardian of Heaven under the former Emperor, who died defending his lord against Taishakuten and is revered as a hero. However, it turns out at the end of the manga that he had, in fact, engineered Taishakuten's rebellion himself: Knowing through Kuy-ou's prophecy and his own visions of his future son's true nature as the "true Ashura", he nonetheless wished for his son to be born. To change destiny and prevent Ashura's awakening, he asked for Taishakuten's help, which Taishakuten promised in return for his body. Ashura-ou married Shashi so she, one of the priestesses bearing one of Ashura's seals on her forehead, would be his mother, whom Ashura presumably would not wish to kill. He had Taishakuten seize the throne and rule cruelly, to prevent the Six Stars from gathering. As a last safeguard, should Ashura still awaken, he asked Taishakuten to kill him and eat his body, so he might become strong enough to kill Ashura. In Tsubasa Reservoir Chronicle, Ashura-ou is the king of the cold world of Celes. At the beginning of the manga, he is sealed in a magical sleep by Fay D. Flourite, who then proceeds to flee from him through different worlds. It is later revealed that he collected Fay from imprisonment from another world and brought him up. However, the Ashuras' nature in RG Veda is mirrored in Tsubasa: Ashura-�, too, has another side, and regularly goes on killing sprees among his subjects. He took Fay in to draw his curse to kill everyone stronger than him upon himself, and die on Fay's hands. (Source: Wikipedia)
QT is a vacuum cleaner robot on the Aloha Oe. Dandy was looking for a capable robot in the shop but ended up with QT. The robot says that he is a high-powered machine, but he's actually just a bucket of bolts.
A water master who appears in place of Kaky� in the film. A smart aleck high school student, he appears to fight for the Dragons of Earth solely to cause trouble. He meets his end in the film during his battle with Karen in the subway, when Karen causes a massive explosion that causes them both to be crushed by debris. (Source: Wikipedia) In Tsubasa Chronicles, he usually appears with Primera, as her lover.
Chun Hyang is young girl yet skillful warrior who travels around legendary Korea with Mong Ryong. She often quarrels with him and calls him "pervert," but it seems that they like each other. She has a very tragic past - father died before her birth, beloved mother committed suicide just a moment before the girl arrived to resque her. Despite that, she s cheerful and very energetic. Doesn't like to be called short, because, hey, she's fourteen, and very mature in her own eyes. Al least compared to her companion. Tsubasa Reservoir Chronicle Chun-yan is a very fiesty girl who wholeheartedly hates the Ryanban and his dim-witted son. She lives in the town of Ryonfi, where she lets Syaoran and the gang stay (while Kurogane patches her roof destroyed by the Ryanban's magic.) Chunyan cares deeply for her village and her people, and is determined to get the oppressive Ryanban - the man responsible for the death of her powerful Shinban mother - out of power, and avenge her mother's death.
An agent of Fei Wong Reed, first introduced in Jade country as the good doctor who was helping the village with their problems around the time the children started vanishing. He seems kind and sincere at first, but we later find out that through hypnotism he was the one that sends the children (most of them his patients) to the old castle to dig out Sakura's feather. He re-appears in Piffle World as the very same person, knowing that Syaoran and his friends will likely assume he is just another incarnation of himself. (Source: Wikipedia)
The master of Kusumabura, an underground city which used to be called the Flower City, before the clan was destroyed by Taishakuten's army during the Holy War. Kumara-ten wanted to defeat Taishakuten and take his place as tentei, but in order to do that, he needed the power of the Shurato, which he heard could only be awakened by using the blood of one of the Ashura clan along with a lunar eclipse. Which is why he captured Ashura. (source: Nishi's RG Veda Gallery)