Gender: Male (Female) He fell into the spring of Nyannichuan and has a unique constitution where cold water turns him into a girl and hot water restores him to a boy. He is Japanese. In his female state, he is called 'Girl Ranma.' He tries his best to hide this condition, and only a few people know about it. While he is full of male pride, he is more feminine than anyone when he is a girl. He usually wears his hair in a braid, and in his female form, his naturally black hair turns red. His appearance as a girl is exceptionally beautiful, even more so than most women. Of course, he is a handsome boy in his male form as well. His female body is considered the best after Shampoo's. Estimated height: 180cm as a male, 160cm as a female. He is very prideful. A key point is his extreme phobia of cats. While Ranma firmly identifies as male at all times, his behavior sometimes changes when he is a girl, contrary to his claims. Initially, these were subtle changes like hand gestures when surprised or excited that he didn't notice, but as the series progresses, his habits and personality shift, and he eventually accepts these changes to some extent. He mainly wears Chinese-style shirts and pants, which become quite loose when he is in his female form. He has black eyes as a male and blue eyes as a female. He wears his hair in a single braid. He retains the same strength in his female form as he has in his male form.

Gender: Female Her appearance is striking with intense colors and a glamorous, seductive visual. Along with Girl Ranma, she is a primary source of sex appeal in the series. Her hair color is deep purple. She has arguably the best body among the female characters. She is Chinese, from the Joketsuzoku (Amazon) tribe. Initially, she pursued Ranma to kill him because Girl Ranma and Genma Saotome stole food from her tribe. However, after male Ranma defeated her in martial arts, she began pursuing him in a different way due to the tribe's tradition that a woman must marry the man who defeats her. "Wo ai ni, Ranma!" Her combat ability is the strongest among the female students, easily capable of overpowering Akane. She speaks Chinese-accented Japanese. She fell into the Maonichuan (Spring of Drowned Cat) and is cursed to turn into a cat when touched by cold water, returning to normal with hot water. Her goal is to marry Ranma, displacing his fiancée Akane. Honestly, she seems prettier than Akane. Her great-grandmother Cologne even personally encourages her to marry Ranma.

Gender: Female The youngest of the three Tendo sisters and the fiancée of the protagonist, Ranma Saotome. She is constantly bickering with Ranma but shows a tsundere side. She is prone to jealousy. She is a beauty and is extremely popular, rivaling Ranma in fame. She is described as the school idol, and many men confess their feelings to her, captivated by her looks.

Gender: Female Shampoo's great-grandmother. Nationality: Chinese, Joketsuzoku. She is one of the strongest characters, alongside Happosai. She can easily suppress Ranma without even trying. She calls Ranma 'Son-in-law' because she wants Shampoo to marry him. Her strength, speed, intellect, and martial arts skills transcend those of almost everyone else.

Gender: Male Ranma Saotome's father. He fell into the Nyannichuan and is cursed to turn into a panda when touched by cold water, returning to normal with hot water. Since he cannot speak while in panda form, he communicates primarily by writing on wooden signs. Strength (5), Speed (3), Intellect (3), Martial Arts (5).

Gender: Male A member of the Kendo club at Furinkan High School. In reality, he is the series' biggest fool. He is so ignorant he doesn't even know the kanji for his own name and fails to live up to his handsome appearance. Furthermore, he fails to realize that 'Male Ranma = Girl Ranma' even when Ranma transforms right in front of him. He was the strongest in the school until Ranma arrived at Furinkan High. Likes: Akane Tendo, Girl Ranma. His combat power is weaker than Ryoga and Mousse. Strength (2.8), Speed (2), Intellect (1), Martial Arts (1).

Gender: Male He always wears long-sleeved clothes and fights by hiding various hidden weapons inside them. Unlike Ryoga Hibiki or Shampoo, who become useless in water, Mousse can still resist using his hidden weapons. He even has the ability to fly, making his penalty less severe. He dreams of becoming Shampoo's husband, but since Shampoo dreams of marrying Ranma, it seems impossible. Strength (5), Speed (5), Intellect (3), Martial Arts (2).

Gender: Male The master of Genma Saotome and Soun Tendo. He is about 30cm tall. A pervert and a troublemaker. At 118 years old, he is one of the strongest characters, rivaling Cologne in power. He commits sexual harassment by clinging to women's breasts even in broad daylight. He is the type to gift a bra to Girl Ranma.

Gender: Male Having passed on his martial arts to his youngest daughter Akane, he is effectively semi-retired. His daily routine consists of playing shogi or go with Genma Saotome. He is the owner of the Tendo Dojo and the father of the three Tendo sisters.