Supporting Cast:

  Kasumi and Mr. Saotome/Tendou.

Kasumi is Akane and Nabiki's older sister, and the caretaker of the house. She doesn't quite understand about the supernatural happenings in town, but she's glad that her family and friends can form a group to help people! Kasumi helps out herself by reporting anything strange she hears from the neighbors, and of course keeping the Nerima Ghost Detectives fed and happy. Kasumi is just so darn likeable. ©

Mr. Tendo and Mr. Saotome, the two fathers who await for their children Akane and Ranma to get married. They don't do much...not that that is unusual.

Ukyou Kuonji

Ukyou Kuonji is Ranma's best child hood friend, and his "cute"  fiancée. Ranma just sees her as a good friend, but she sees Ranma as the man she wants to marry! She runs a small Okonomiyaki shop called "Ucchan's" named after the nickname her "Ran-chan" gave her. She's not quite sure herself what's going on, but she'll stick by her beloved Ranma's side all the way! Just watch out for her gigantic spatula! Ukyou is just too cool!©

  Shampoo and the other Amazons

Shampoo is Ranma's third fiancée. She had to kill Ranma's girl form when he beat her in a fight, and had to marry Ranma's boy form when he beat her in yet another fight! Shampoo is now just as affectionate with Ranma's girl side as she is with his boy side. She is convinced that she will easily beat her "airen's" other fiancées, and be the woman Ranma will marry! Wo ai ni! Beautiful and a great fighter, Shampoo has it all...but Ranma seems a little indifferent about his feelings towards the cute Amazon. Shampoo is yet another wonderful character!©

Mousse has been in love with Shampoo for a long time, but Shampoo never returns his affections. He's determined to beat Ranma and win his Shampoo...too bad that without his glasses he can't see a darned thing!

Cologne is Shampoo's Great Grandmother ( see a running gag with the Amazon names?). She trains Shampoo, her "son-in-law" Ranma, and occasionally Ryouga in the art. A wise old woman indeed. She's also in charge of the Cat Cafe where both Shampoo and Mousse work.

Kodachi and Tatewaki Kuno

A rather insane family. The two are brother and sister. Kodachi is in love with Ranma's boy side and despises his girl side. It's the same with Kuno, except vice-versa. Neither seem to (or be willing to) understand that Ranma's boy side and girl side are one in the same! Love is blind indeed. Kodachi is an expert in martial arts rhythmic gymnastics, while Kuno is a kendoist. They're ridiculously rich. Funny thing is, they seem to be a prime target for ghosts, especially poltergeists. Who would have thought?

Others:

Happosai: A lecherous old man, and oddly enough the master of Anything-Goes, with Ranma being his unwilling student. Happosai will not pass up a chance to jump on a girl or steal panties. No one likes him really...though he's excellent comic relief.

Spirit Guild/SSTF: Unknown...a group of strong magical figures who keep the spirit world in check. Tsuna is one of their best officers.

Cerberus: A three headed dog that Tsuna doesn't seem to take a liking to. He's her greatest rival, and she fears him for obvious reasons. He guards the gates of Hades. Not a nice puppy, because his "doggy treat" would be your head!

Ghosts: Many and many ghosts seem to come forth from the box, and it's impossible to list them all! But each have their own insane, evil, and thoroughly creepy personalities.