She was left for dead after the brutal murder of all members of her family, Henrietta is the newest addition to the Agency. She was assaulted repeatedly next to the dead bodies all night, which had inflicted psychological trauma to her, making her suicidal. Her struggle is the most developed of all the girls as she adjusts to her new life. Henrietta's favorite activity is to spend time with her handler, Jose`. Whenever Jose seems to turn his attention to other women (including the other cyborgs of the SWA), Henrietta becomes slightly jealous. This is due to Henrietta's strong romantic feelings for him, as a result of her faint conditioning and the care he gives her.
She is part of the Kendo Club and is an admirer of Rei Hasekura. She went on a date with Rei in the first season after finding Rei's card in the treasure hunt on Valentine's Day. In the fourth season she is the finder of Yoshino's card. (Source: Wikipedia)
The cousin and arranged fiance of Sachiko; in order that a trusted man inherit the Ogasawara company, their engagement was arranged, although Sachiko detests it and denies that he is her fiancé. (It is later revealed that Sachiko once loved him and had her feelings spurned, which resulted in her disdain.) First introduced when he is given the role of the prince in Cinderella: the joint play put on by the Hanadera school and Lillian Jogakuen. He has prestige in the Hanadera school since he is president of the Student Council there. However, by the time Sachiko reaches her third year, Suguru has already graduated. He is gay, and has a crush on Yumi's younger brother, Yuuki. He is often seen in the company of Yuuki, taking him along on trips and gatherings, doting on him much in the way that Sachiko dotes on Yumi. He is very arrogant, and is especially disliked by Satou Sei, as both are often at loggerheads whenever they meet, bickering or making snide comments at one another. It appears that they both know of each other's sexuality. Despite his coldness, Suguru does care deeply for Sachiko, going so far as to tell her that when they are married, she can have lovers on the outside since he will only be her husband in name only. Sachiko however finds this offensive, and comes to hate him for it, thinking him selfish. He tries to aggravate his younger cousin so that she will be more open and truthful about her feelings, rather than burying them inside. He has taken a great liking to Yumi and notes that the younger girl has had a very profound effect on his cousin.
OVER is the ruthless third member of "Four Heavenly Kings", the four elite members of Tsuru Tsurulina IV's Hair Hunting corp. (whom also includes Gunkan, Purupu and Halekulani) Unlike many Hair Hunters outside those seen much earlier in the series, OVER takes his job of ripping the hair out of the subjects of the Maruhage Empire extremely seriously and will treat all in his gaze as prey. This harshness for his job includes the treatment of his own teammates, as seen by his scalping of both Gunkan and Kitty Poo after their failures against Bo-bobo and the Hajike rebels. Although OVER can and will attack with little or no notice, he mostly controls his hair hunting activities from an ancient Japanese castle, where he controls a platoon of various ninja-like warriors including The Five Hidden Killers (dub: The Ultimate Five Assassins), who themselves are known for their stealth and abilities. He has noticeably long white hair and eyebrows with pointy ears and long chin. He wears a short black jacket that reveals his chest and white pants.
Kaji is in the same grade as Ayu and Nina, and is also the school idol. He is considered cool and always has a nice smile. All his fans are constantly giving him presents, and he even has admirers from the 3rd grade. However, this is only his outer mask. Kaji is in reality a normal guy who hates being given presents by people he doesn't know. But he is working hard on his "nice person" persona because the girl he likes, Ayu, once told him that's the way she liked him. He becomes closer to Nina after she discovers his deception. He is an introverted person, and doesn't like giving away his real feelings or thoughts. Kaji belongs to the school's baseball club. His best friend is Tsujiai.
Tsujiai is a classmate of Kaji, Ayu and Nina. He is the head of the male tennis club and is a slightly extravagant person. Ayu seems to hate him because at the start, he always managed to destroy her chances with Kaji one way or another. Tsujiai introduces Nina to Doraemon (which she loves). His best friend is Kaji and he likes Nina which is shown more in the manga than in the anime. He has a cat name Shinnosuke and is the third person to know that Nina was a magic girl because he saw that Rio the cat transforms into a human.
Younger of the two van Hossen sisters. She is lovely and energetic. She loves her father Vincent and loves to cling around him all the time. She already calls Teppei by 'Onii-chan' since he is likely to be a family if he marries his fiancée Sylvia, Maria's elder sister.