A doctor and inventor in the Water Kingdom, a relatively recent inhabitant to the realm. He appears cordial and at times comic, but is perceptive and secretive. He appears to have his own motives regarding Habaek and Mura warns Soah not to trust Tae-eul-jin-in so readily. It is revealed that he is the one who taught Nakbin how to put the curse on Habaek and only the person who placed the curse may be the one to lift it. Thus every year, a bride is sacrificed so that the reincarnated Nakbin would be able to return to the water country and lift the curse. Habaek knows that if he demands this sacrifices from humans, he will be thought of as an evil god and be hated by the people. Nevertheless, Habaek is willing to bear the condemnation in order to see Nakbin again. To make sure that only brides who are Nakbin will enter the water kingdom, Tae-eul-jin-in has erected a barrier that so that any brides who are not Nakbin will not be able to enter but perish in the waves. This causes Soah to wonder how is it that she was able to enter the Water Country, despite the fact she is not Nakbin's reincarnation. (Source: Wikipedia)
Queen is one of the main protagonists in the series, and current Wild's league champion. she's a mixed martial artist, and is seen to be proficient in nearly every form of martial arts so far. At first, Queen was cold to Song Jae Gu. But slowly she has warmed up to him, and now (Though she tries to hide it) tags along with Lee Moon Young and Choi Dal Dal when they follow Jae Gu to his part-time job, and then to his home. She has feelings for Song Jae Gu but tries to hide them. It's been said that Queen has "conquered" the Taekwondo, Karate, Mixed Martial Arts and Kickboxing stages. Though it's unknown whether this is true. (Source: Girls of the Wild's Wikia)
HyuNa's homeroom teacher - he's young, handsome, all buddy with the students and therefore quite popular (especially with the girls). His attitude toward his job as a teacher seems not too serious.
Hae In was raised by her aunt. She is blind.
Jung-In is the president of music company JI Entertainment producing a music drama. Jung-In was born into a wealthy family and has never lacked money. Jung-In is also good looking and has good manners. Because of this, Jung-In appears to be highly eligible bachelor for marriage. But, Jung-In also has a cold side - he doesn't like becoming too close to people. His weakest point is that he can never say no to his father. He enters into a 100 day fake marriage with Mary and soon falls in love with Mary. Jung-In also comes across Mu-Gyul who will help fulfill Jung-In's dream in the music world. Mu-Gyul will also become a rival for Jung-In over Marry. Then Seo-Jun enters the picture.
Kyoko's father-in-law was thrilled to welcome Kyoko as a member of the family, but when his son Soichiro died only six months after marrying Kyoko, Otonashi continued to let Kyoko stay in his home and gave her the job of manager at Maison Ikkoku in hopes of taking her mind off Soichiro.