Makoto's 17-year-old sister (currently 19). Initially she has a rather romantic look on a relationship, and her quest for true love lets her drift through a number of affairs before she finally finds happiness with her first boyfriend, Yosuke. Her experiences and introduction into the sexual world are followed throughout the series. (source: http://en.wikipedia.org/wiki/Futari_Ecchi)
Chief mechanic. He is married to Miharu, but has been separated from her for various years when the series starts. He is 36 years old. (Source: Wikipedia)
Karura was once princess of Na-Tunku before she was taken down and replaced with a puppet of the Shakukoporu. She is found after killing many enemy soldiers *with her bare hands* in order to escape. Even though she's royalty, she decides to live a "normal" life as "Karura", serving Hakuoro. She and her brother are the last two Giriyaginas on Earth. Her superhuman strength lets her wield a ridiculously heavy sword, thus making her a very effective shock troop, acting more like Hakuoro's tank on the battlefield and ripping through enemy troops. She's often seen carrying a jug of sake around, sometimes even on the battlefield. She appears to have known Urutori from long ago, though their shared history is never revealed. During the slave's revolt in Na-Tunku, Karura swears everlasting devotion and fealty to Hakuoro, the most sacred vow one of her kind can make. Her brother, Derihourai, becomes the new emperor of Karurauatsuurei (named after Karura), the new name she gives Na-Tunku after the slave's revolt succeeds.
The Director General of Space Patrol's Ogikubo branch. He has a strong sense of justice, to the point that his many catchphrases include the word "Justice." Although he talks big, he acts little, often relying on other characters, especially his secretary. He also jumps to conclusions, as seen when he repeatedly arrests and frees Luluco in the first episode.
He is almost always seen sitting at his desk and gesturing with his extended index and middle fingers in the shape of a gun. His skeletal body constantly burns with a purple flame, which appears to be a manifestation of his sense of justice.
A 3rd year and the vice president of the Magic Club. Aburatsubo is homosexual, but only shows affection toward Takakura; he never shows signs of being interested in any other boy. Takakura is uncomfortable with Aburatsubo's flirting, but doesn’t think much of it; though Aburastubo continuously flirt with Takakura, he understands that Takakura will never return his feelings. He has a variety of talents and is involved in many other clubs besides the Magic Club, such as the tennis team and drama club. The TV series establishes that doesn't have a very good standing towards his mother, who constantly babies him, though he does love her.
Casino King is the name that the Gambling King gives to any area where he can set up his rigged gambling games, which include dice games, card games against the King himself, and pachinko machines. It is typically little more than a small stall at a fair or festival, or some relatively sheltered spot in an out of the way position on the street, but when the King successfully "wins" the Tendo Dojo from Ranma in a rigged game, he converts it into a much larger version, taking advantage of its wide space and sturdy roof.