Satsuki Miyakoji is the 1993 Miss Tea Ceremony and is quite beautful. She is too shy to meet with Sentaro so she sends her pet monkey Sanae in her place. Satsuki means "tea moon" the joke here being the tea reference. Miyakoji means "main thoroughfare of the metropolis." (Source: Rumic World)
Tatewaki Kuno is an upperclassman at Furinkan High and was the big man on campus – at least until Ranma came along. Hailing from a very wealthy family, he is also captain of the kendo club and wields both his fortune and sword with equal ease. Given to spouting off Shakespearesque poetry (he quotes Confucius in the Japanese original), he is madly in love with Akane. He also falls for Ranma’s female half and never realizes that she is really his mortal enemy in girl form. He once overhears her called by name, and attempts to write it down for future reference, but never makes a connection and continues to refer to her as a "goddess in pig-tails" for the entire series. (Source: Wikipedia)
Kodachi, known as "The Black Rose" in the gymnastics community, is presented as Tatewaki Kuno's sister and a student at St. Hebereke School for Girls (St. Bacchus School for Girls in the manga). This is in contrast to several members of the regular cast, who attend Furinkan's mixed gender assemblage. As a master of "Martial Arts Rhythmic Gymnastics" and captain of the school's team, she often preemptively attacks her opponents with various weapons, including swords or a giant mallet to cripple them, thus winning by default. She calls it "fighting in all fairness before the match." Kodachi had seldom, if ever, lost a match before battling Ranma, a result of this practice. When these failed, she has also resorted to the use of more devious methods, once attempting to shake her foe's hand with thumbtacks between her fingers. She is especially fond of using paralysis gas and sleeping powders on people, even when she has no apparent motivation to do so. Kodachi becomes enamoured with male Ranma after the latter acts as her 'knight in shining armour' by saving her from falling off the roof of the Tendo Dojo. Therefore, she is the only one of his suitors without some official or semi-official claim to him. Despite this, she considers him her lover and wants to make him her own through any means necessary. She and her brother have 'opposite' perspectives regarding this matter, since he despises Ranma's male form due to the latter's engagement to Akane and for 'enslaving' the mysterious 'pigtailed girl.' Correspondingly, Kodachi dislikes Ranma's female form, whom she believes to be a romantic rival. Regardless of his dislike for Ranma, Tatewaki has enthusiastically given them his blessing to go steady since this would free Akane for himself. He secretly imagines that they would have a miserable life together.
Mousse is a long-time friend of Shampoo, though she might not view it that way. He has been in love with her for most of his life, but she finds him annoying at best. He can't see very well without his glasses, often mistaking someone for something else. He comes to Nerima in search of this "new fiancé" that Shampoo has, and he stays to attempt to woo his sweetheart. Shampoo rebuked his advances when they were children and this still holds true by Amazon law, even if he manages to defeat Ranma in combat, but he remains persistent. Now a waiter at the Cat Café, he turns into a duck thanks to his own Jusenkyo curse. When in human form, his clothes contain weapons of drastic proportions, including needles, chains, swords, bombs, household appliances, and just about anything else imaginable. In duck form, Mousse can hide knives in his feathers. (Source: Wikipedia)
Nodoka is Ranma's loving mother. She hasn't seen him and Genma in over a decade though, when they left on their training trip. Stating that a doting mother would hinder Ranma's training, Genma made a contract with her to raise Ranma as "man amongst men", and if he failed, he and Ranma were to commit seppuku. However, because Ranma's curse makes him a woman half the time, they spent most of Nodoka's appearances hiding from her as Ranko Tendo and her pet, Mr. Panda. Nodoka's heart was constantly broken by knowing that she wanted nothing more than to see her son again. Eventually in the manga, she did meet Ranma and Genma and discovers their curses. However, she was more accepting than they expected. Mostly because she eventually began to suspect that Ranma and Ranko were, in fact, the same person. (Wikipedia)