Birthday: December 1st Karin is a very happy and lively kind of girl. She owns her own school club were her and the club members go out and search for mysterious things, such as aliens. She tries to get Takaki to join her club, but he declines. Soon after, they have a little accident were Takaki falls on top of Karin. Karin then makes him join her club after she semi-threatens him.
Ren is a new student at the high school Miaka and Yui attend. He is a freshman and the same age as them, and is extremely popular at school. He runs for school president against Yui, and becomes the leader of a group of students who threaten Miaka and Taka. Ren has the ability to control people's minds, detesting and taking advantage of weak people who allow him to manipulate them. He dislikes and is jealous of the miracle that allowed Miaka and Taka to be together. Ren is the first Shitennou for Tenkou, who aided him in acquiring his powers and allowing him to travel between the two worlds. From linkFushigi Yuugi - The Fire of Suzaku's Wings
A foundling girl raised by Shint� priests at Ise Jingū and the the Dragon of Heaven most immediately in touch with Princess Hinoto. Called the "Hidden Priestess of Ise", her specialty is sword fighting, a massive sword emerging from her left hand. Despite her cold, stoic front, Sorata falls in love with her, and ultimately she comes to reciprocate. In Tsubasa Reservoir Chronicle In the Republic of Hanshin, she's a retired miko married to Sorata. In Tokyo, she's a miko who can foresee disaster and is one of the seven fighters of the Tower faction.
A dragon of heaven, Karen is a Soapland call girl and devout Catholic, she was abused by her fundamentalist mother when her power to manipulate fire manifested in her childhood. She comes to admire Aoki. In Tsubasa Reservoir Chronicle In Shara-no, she's the leading actress in an entertainment troupe. In Tokyo, she's one of the seven fighters of the Tower faction.
Aries is a timid female, very softspoken and shy. In the past, Karen the Celestial Spirit mage forced her to do many horrible things and generally abused her, such as using her as a shield (Because, apparently, she has no fighting abilities) and using her to lead away all of her boyfriends instead of simply refusing them. Loke arc Three years prior to the story, Aries was owned by Karen Lilica. In Loke's flashback, Aries was treated horribly by Karen. She used her to keep her "boyfriends" away from her. She tries to protest but she is too intimidated by Karen. Blue Pegasus Guildmaster Bob sees this and warns Karen to take care of her spirits. In a rage, she accuses Aries of ratting her out and apparently physically assaults her, although all that is seen is Aries getting shoved to the floor. Karen threatens to keep Aries in the human world for a week, but before Karen can act on this threat, Loke steps in by summoning himself to take Aries' place (Since Karen could only maintain one spirit at a time) and tells the Celestial Spirit Mage to break her contracts with Aries and himself. When she refuses, Leo threatens to remain in the human world until she agrees, rendering Karen unable to summon any other Celestial Spirits. Karen continues to refuse, since she believes that he cannot remain in the human world for a long time; however, Leo leaves her with the ultimatum and goes to a deserted chapel where he stays for three months, attempting to get Karen to break the contracts. When Leo returns, he learns that Karen was killed on a mission and that Aries' key was taken. Oracion Seis arc After an exchange in the Spirit World, Aries is summoned to battle with Loke and Lucy Heartfilia. Despite the two not wanting to fight one other, they choose to fight for the sake of their pride, and the battle begins. However, due to Aries' non-combative nature, she fights a losing battle to Loke. As the battle progresses, Angel summons Caelum and uses it to blast through Aries and hit Loke, causing them both to return to the Celestial World for healing. After her defeat, Angel is arrested and her contracts with her spirits are broken. Aries, along with Scorpio and Gemini, seek out Lucy and form contracts with her instead. Edoras arc Lucy summons Aries to prevent the Edoras soldiers from capturing her and her friends. Aries then proceeds to attack the soldiers with a technique called "Wool Bomb", which allows Lucy and company to escape.
Scorpio is a Celestial Spirit that is one of the 12 Golden Zodiac Keys. His key is currently owned by Lucy. He is also Aquarius's boyfriend with which he has a happy relationship. His weapon appears to be a large, strange gun shaped like a scorpion's tail. Scorpio has a strange manner of speaking which is similar to the third person where as he says "We are" in the beginning of each sentence. Scorpio has also a habit of folding his middle and ring fingers back while keeping his index and little fingers extended, mimicking the pincer claws of a scorpion. Unlike Aquarius, Scorpio hasn't shown any hostility or dislike towards Lucy. In fact he seems to genuinely respect and care for Lucy.
Yeagar (イエーガー Iēg�) is a Mage of the Quatro Cerberus Guild. Yaeger seems to employ plants in battle. Yeagar has proven himself capable of summoning forth large carnivorous plant-like objects from the ground, shattering it in the process. Such seeming flytraps, which consist of four massive "petals", with a row of rounded teeth on their inner sides and massive spikes on their outer ones, are roughly the size of a human, and damage enemies by suddenly closing themselves on them, being shown sending them flying away with brute force. (Source: Fairy Tail Wikia)