The third daughter of the Tendo family. A beautiful girl who is incredibly popular at school. A first-year student at Furinkan High. She is Ranma's classmate and fiancée. She excels in martial arts and sports. While she has a fundamentally honest and kind personality, she struggles to be straightforward with Ranma. Her jealousy often leads to constant bickering. She has a short haircut.

Having fallen into the Spring of the Drowned Black Pig, he turns into a small black pig when splashed with cold water. In his pig form, he is doted on by Akane as her pet, P-chan. Akane is unaware of his true identity. He harbors a secret crush on Akane and is the only one who addresses her as Akane-san. He views Ranma as a rival and challenges him to duels almost daily. He has a terrible sense of direction, often taking days to reach a destination. He will relentlessly pursue his target.

A girl from a Chinese tribe of female warriors known as the Joketsuzoku. Because she was defeated by male Ranma, their laws dictate she must make him her husband, leading her to pursue him aggressively. After falling into the Spring of the Drowned Cat, she turns into a cat when splashed with water. She speaks with a distinct accent, ending sentences with "-ne" or "-yo." She wears a red, short-skirted cheongsam and has purple hair.

Shampoo's childhood friend. He is deeply in love with Shampoo, but she barely acknowledges him because she considers him weak. After falling into the Spring of the Drowned Duck, he turns into a duck when splashed with water. Without his glasses, he is quite handsome, but he is so nearsighted that he cannot distinguish objects or people right in front of him. He resents Ranma for being liked by Shampoo and challenges him to duels daily. He fights using hidden weapons concealed within his long sleeves.

The captain of the Furinkan High Kendo Club. He is in love with Ranma's female form, whom he calls the "Pigtailed Girl," and constantly asks her out, unaware that she is actually Ranma. A second-year student. He is a two-timer who is also pursuing Akane. He cannot accept that Ranma is Akane's fiancé.

Genma: Ranma's father. When splashed with water, he turns into a panda and communicates by writing on signs since he cannot speak. He has a very irresponsible personality. Soun: The father of the three sisters. He runs the Tendo Dojo of Anything-Goes Martial Arts. He is best friends with Genma, and they promised to marry their children to each other. His dream is for Ranma and Akane to marry and inherit the Tendo Dojo. While he looks dignified at first glance, he is actually quite timid.

The eldest daughter of the Tendo family. 19 years old. A reliable person who handles all the housework for the Tendo family. She has a gentle, easygoing personality and rarely gets angry.

Ranma's other fiancée and a classmate of him and Akane. She runs a Kansai-style okonomiyaki shop called "Ucchan." She carries a giant spatula on her back. She speaks with a regional drawl. Her nickname is Ucchan. She is also a martial artist who fights using okonomiyaki ingredients and tools modified for combat. She usually calls you Ran-chan.

The second daughter of the Tendo family. A second-year student at Furinkan High. She is always calm, dry, and calculating. A hardcore miser who describes herself as a "slave to money."

Shampoo's great-grandmother. She is said to be over 200 years old. She is determined to make Ranma Shampoo's husband. She is incredibly powerful.