Yui Asaka

After the events of the previous film, the 17 years-old Sukeban Deka III, Yui Kazama, works for the Juvenile Security Bureau along with her older sisters Yuka and Yuma. This organization is led by politician Kuraudo Sekin, who fights juvenile crime in heavy-handed manners, to the extent to equip his student agents with triple-bladed yo-yo weapons. However, when Sekin's methods become too zealous, Yui quits the bureau and refuses to undertake undercover missions for them. It is soon discovered that Sekin's actual goal is to overthrow the Japanese government, and the Kazama sisters, along with a gang of young outcasts, have to stop him.

After the events of the TV series, the 18 year old Yoko Godai has abandoned her special agent Saki Asamiya name to return to her normal life, and is now studying for college entrance exams. However, she accidentally bumps into a young man named Kazuo Hagiwara trying to escape from a group of hitmen, and learns that he comes from Sanko Academy, a private school located in a remote island known as Hell's Castle. The school is ruled by a former revolutionary thought to be dead named Hattori who is trying to brainwash students into terrorists to help him stage a fascist coup d'etat in Japan.

Yawara Inokuma is a girl who aspires to an ordinary life but due to her innate talent is forced to practice judo by her authoritarian grandfather, Jigorou Inokuma, with the aim of achieving the championship in Japan and the gold medal in the Barcelona 1992 Olympic Games. Because of the pressure from her grandfather she has a generally bad attitude about judo, avoiding it as much as she can. However, over time she comes to understand why her grandfather loves judo and appreciates it more.

Fans of Kamaitachi no Yoru gather to shoot a film based on the game until one of the cast members is killed.

The Kazama Sisters are tasked with investigating a deadly temple.

Commander Sugata discovered the existence of the Royal Underground Empire Tube, a malignant force that desires to dominate the land, which is based underneath Japan. He recruits five young people, each one specializing in a style of martial arts, and teaches them in the ways of the mystical "Aura Power" energy. A year after he recruited and trained the Maskmen, Tube is ready to strike.

Villain or hero, Taira no Kiyomori changed Japanese history forever 900 years ago. Without ever knowing his real father, Kiyomori was raised as a samurai. Together with his stepfather, he wiped out piracy along Japan's western coast, becoming a full-fledged warrior samurai. In an age when samurai were looked down on as members of the lower class, Kiyomori was skillful at winning the hearts and minds of the people. By rounding up surrendered pirates and achieving other successes, Kiyomori eventually became the de facto ruler of Japan.

Kazama Yui, a country girl from Kyushu who was recruited by the Dark Director and given the role of the third Saki Asamiya. In the story, Yui was sent to Tokyo to meet up with her long lost sisters, Yuka and Yuma, and they inherited the family's ninja art in order to solve the menace of a psychic terrorist known as the Emperor. Now turned into a trio of kunoichi, they would battle the villain and his army, helped by their mentor Kazuya Yoda and the agents Reia Kido and Obiwan Osho. Yui herself rarely used the Saki Asamiya moniker and showed a very different personality compared to Saki and Yoko, and the series was more focused in fantasy than serious urban crime drama. NOTE: although it has 3 in the title and is loosely related to the other two Sukeban Deka shows this should not be treated as a direct continuation but rather as a standalone show.

As a former gang member, Hazama Ichiban witnessed the worst side of the emergency medical system and vowed to become a doctor to change it. With the aggressive passion he learned on the streets, Ichiban has worked his way to becoming a no-nonsense emergency medicine resident. But it is this same passion that he must learn to control when confronted with a situation beyond his help.