Oyuki is the queen of Neptune, which in the series is a frozen, snowy planet populated entirely by women, as most of the men have to go off-planet to find work. As a child she used to hang out with Lum, Ran, and Benten when they were all in grade school. She is clearly patterned after the yuki-onna (literally "snow woman") of Japanese folklore. As such, she has the power to control and create ice, snow, and extreme cold. Typically dressed in a long, elegant kimono, Oyuki is soft-spoken, regal in demeanor and very slow to show anger. However, once roused to actually display her abilities she proves to be the most powerful character in the series. Because of the wrath she displays when angered, Oyuki is the only person in the entire galaxy that Ran genuinely fears.
A king rank in the North God Style. He fights mostly by blinding his opponent by reflecting sunlight with his mirror-like armor.<br><br>(Source: Mushoku Tensei Wikia)
Touma Kazamatsuri is a glasses wearing bookworm, with short, messy dark hair. She dislikes her hair in the morning, as it is a bad bedhead. She also seems to have a connection with a hair elastic. Touma also has a collection of plushies, which sit on top of her bookshelf at home. She prefers to be by herself alone in a quiet place, preferably the library. She also dislikes P.E class. Although Touma is easily annoyed by Torako's interference and she seems to dislike Torako on the surface, she is actually a good friend of Torako's, and cares for her (though she tries not to show it). She and Torako made a promise of becoming mutual friends, when they made a visit to the Kamizono Academy and met each other by chance. Touma has an older sister which she often fights with.
Wim Knaup is a boy frequently bullied by his young neighbors in Ruhenheim because of his father being a good-for-nothing drunkard. Wim works as pageboy at Hotel Versteck, running errands for Mr. Klaus Poppe. Whenever he gets his salary from running errands, he takes it home for his and his father's maintenance. Most of the time, his payment goes to his father's drinking vice. For this reason, he is always bullied by some kids on the neighborhood and steals his wages. Insults for his father makes him angry, even though most of those insults were right. One time, just after being bullied, a mysterious man meets him on the road and says to him, "Hey boy, don't you hate them? Don't you hate them enough, to kill them?" (Source: Monster Wiki)
Lum's childhood friend and most loyal friend in the Galaxy. Her character is named after Shichifukujin Benzaiten (one of the Seven Lucky Gods), the Shinto goddess of knowledge, art, and beauty. This Benten is a "space biker chick" who wears a plate-mail bikini, sports a "butch" hair style, tears around the sky on a flying alien chopper, curses like a longshoreman, and carries a high-tech bazooka. She's sassy, smart and easy going. She's also has a good sense of humor and an even greater sense of honor. She's always willing to help Lum whenever she's gets in a tight spot. (Source: Wikipedia)