Dolls
The robots, or dolls, are part of the Universal Child Welfare Organization, whose goal seems to be to protect children worthy of protection by their standards. They also seem to aim to dispose of the "trash among the children" as well. The organization is made up of 130 dolls, though they refer to themselves as the "130 Sisters Welfare Machines", indicating that they were made to destroy and protect. These "sisters" were governed by the Council of Nine Sisters, composed of the eldest nine sisters. This council was governed by the Waste Removal Bureau, which is possibly a part of the Black Hare Organization. It seems, however, that the 130 Sisters opposed the last mission given to them by the Bureau, which ordered them to obey their commands and "purify" the "illegal star system" (the Solar System) of "illegal life-forms" (the aliens that attacked the 13 Wards). Afterwards, while chaos broke apart the 130 Sisters, Q-Ko took on her ground mission (no details were given about the ground mission except it was considered treason by the Council of Nine Sisters) and ended up losing her memory in the process. The sisters once again re-united and many acquired new pilots, but only a few of the dolls' names are given.
- Q-Ko: The second protagonist in the series. Q-ko is a cute, shy, and naive robot whose memory was lost while taking on an un-detailed mission. She ends up with Kirio as her pilot, although it seems as if that is so only because she did not make contact with Furiko first. In many ways, she is just like a human; she eats (though she does not chew), she gets hungry, and apparently can feel love and compassion for real humans, like Kirio. In battle, she utilizes a small shield in the shape of a heart and can slice enemies apart with a single laser sword that extends from the fingers of her right hand. Q-ko has large bunny-ear-like panels that are the same color as her hair, they float in place through means unknown. They appear to act similar to wings, streamlining her movements while flying for added speed. She is or was a member of the Council of Nine Sisters and is the ninth oldest of all the 130 Sisters. Q.KO's personality is similar to Canti from FLCL (also by Ueda) seeing as they are both powerful, but seem to have lost their ability to fight well after they broke. They are also both easily embarrassed.
- AA-Ko: Possibly the antagonist of the series. AA-ko is cool and collected, yet harbors a cold and bitter hate towards her "mother", whose identity is never revealed in the story. She also does not like Q-Ko, but they treat one another with respect as they are the only ones who remain out of the 9 Eldest Sisters. Furiko becomes her pilot and also seems to be a hindrance for AA-Ko. She almost never loses her composure, even in the midst of battle. When in her robot form, she utilizes two diamond-shaped shields and her hair as weapons. She uses her hair as weapons by extending it into needles that reach an incredible length. AA-Ko resembles a Japanese ghost to a degree, in that she has long black hair that she can use as a weapon, wears a white kimono, holds her arms in front of her, has invisible feet, and can apparently levitate. She has two diamond-shaped white panels (resembling rabbit ears to a degree) floating above her head through unknown means. Without her kimono (in a scene where she bathes, as example), she appears to be an ordinary Asian teenage girl, with the exception of a visible glowing heart and two floating diamond-shaped panels above her head, which resemble rabbit ears. Compared to the other dolls, her design is unique. She is said to be the strongest of the 130 Sisters.
- SS-Ko: SS-Ko is a strict doll wearing a wide brimmed hat, a cape (like the others.) and rain coat-like dress. She is calm but strict, and will follow rules and orders to the end. She knows a great deal of information concerning Q-Ko and viewed her as a role model before she lost her memory. She is also very mean to Q-Ko and often scolds her. She also describes the love that Q-Ko feels towards Kirio to be a malfunction in her programming, yet is fully aware of the truth behind the situation. She is not very fond of Kirio, possibly due to his misuse of Q-Ko's abilities. She does, however, help Kirio find Q-Ko after she runs away from him and even loses her cool composure when he is frustrated by her riddle. Like Noru, her pilot, SS-Ko seems to know a great deal about the events going on in the story and acts as the mediator between AA-Ko and the other 130 Sisters. In battle, SS-Ko can utilize two laser swords identical to Q-Ko's and also seems to be able to fly faster than her. The flower-like adornment atop her hat acts as a signal beam, but it apparently only works when in her robotic form. She also bears some resemblance to the giant robot from FLCL.
- VV-Ko: VV-Ko is the only black series doll mentioned by name in the series. She has also been referred to as "Gothlolita", which connotes her style, with black Victorian-era "gothic" clothing and spiral locks of hair. She is first piloted by a photographer nicknamed "Otayama". She has an attack that causes a huge explosion, at the cost of the life of her pilot, so Otayama was apparently disposable to her. After adopting Shiino Ino as a pilot, VV-Ko shows a more compassionate side, though she still appears to be mute (she also ate the chocolate Shiino bought for her, which is unusual because, as noted by one of the other dolls, Black Series dolls typically only eat living flesh). In her robot form, the ribbon tied behind her outfit resembles bat wings, but she can undo them to use as a single black ribbon, which she spins into a spiral spear, from which she can unleash an explosion.
- RK-Ko: RK-Ko is designed to look like a Native American Indian, and is piloted by Mei. Generally quiet and objective, RK-Ko is quick to nullify SS-Ko's critiques of Q-Ko by pointing out that Q-Ko is damaged, and therefore not entirely responsible for her actions. Despite this, RK-Ko still looks to SS-Ko to lead, and shows particular concern for her pilot's welfare. RK-Ko's weapon is a diamond-shaped tomahawk.
- NH-Ko: NH-Ko is designed to resemble a girl wearing Italian Tyrolean clothing, with her hat and dress (when in robot mode), she doesn't say a lot but her lines seems to indicate that she cares a lot about her pilot, she can also be quite the hothead, and has a strong disliking of the black-series...
- One armed doll: She is never referred to by name, but fans refer to her as X-Ko (as in her X-shaped symbols on some places). She never utters a line, but she seems to be a victim of a failed friendship with a doll, because in the first scene of part. Another doll is killed by human forces, and X-Ko obliterates them by forcing a pilot inside her and uses him as ammunition for her attack (similarly to VV-Ko). Before that she reaches out her only hand towards the dying doll. Later on, she just makes brief appearances, among others in a flashback: where she is seen sitting behind the past Q-Ko in similar garb to the past Q-Ko (a ragged poncho). It is also seen that she lacks an eye, and wears a large white eye patch with an X on it, as well as white pieces of paper that hangs down the sides of her head (also with X's). Though in her doll for she wears a white head band. She also lacks a left arm, as seen in the first scene of part 2. Near the end, she dons a long black, hooded robe, giving her the appearance of a grim reaper. In the last scene, she flies along with the other 130 dolls, to their leader AA-Ko. She also appears in a short comic Ueda did for Faust, though very little in known about it.
