Nana (ナナ), also known as Number 7, is a young Silpelit girl who has the physical appearance of being 12–14 years old. Nana's actual age is actually about 6 years old; the manga explains in greater detail that Silpelits age more rapidly than humans (or a "Queen Diclonius" like Lucy). Her name, 'Nana', is Japanese for the number seven, the number by which she was called at the research facility ("Nana" is also a fairly common female name in Japan). Most Diclonius babies are euthanized at birth in sweeps of hospital maternity wards, but Nana was one of a handful kept alive for use as a test subjects and has spent her entire life in the Diclonius research facility.
Nana sees Kurama as her father, whom she calls "Papa," because she needed something to keep her from going insane during the torturous experimentation, believing that she is making him proud. Kurama in turn sees her as his daughter and cares very much for her. In an attempt to recapture Lucy, Kurama sent out Nana to find her (diclonii can telepathically sense each other), then retreat until Kurama could arrive with soldiers, but Nana wanted to impress Kurama so she tried to capture Lucy herself. Lucy and Nana engaged in a brutal telekinetic battle that ended with Lucy dismembering Nana. Kurama personally came to stop Lucy and save Nana, then also disregarded Director General Kakuzawa's order to kill her by giving her new prosthetic limbs (a running gag is that they always fall off at some point) and setting her free with money to survive. In the manga, Nana saw Kurama in a much more romantic light and he possibly returned her feelings; during the ending, Nana and Kurama were shown together visiting a grave marked "Kurama" and Kurama holding Mariko's ashes. Nana then reveals that they are now living together. Nana asks him to take her as his wife and began crying, questioning whether Kurama wanted to "make babies with Nana", to which Kurama smiles and responds, "Why are you saying such silly things? Nana is my...", as the scene fades.
Unlike many other Diclonius, because Kurama treated her with kindness, Nana is not homicidal or sadistic. She has the ability to temporarily disable other Diclonius' vectors by having her vectors go through their pineal gland. Although her vector power is superior to Lucy's in terms of range (5 meters to Lucy's 2) and certain abilities, she lacks Lucy's sheer strength (Lucy can lift and throw many times heavier objects than Nana can), and violent nature; Nana's empathy for others does not allow her to fight as vigorously kill. With her vector arms, she is later able to manipulate prosthetic appendages and even throw them like a rocket punch.
Nana can be seen as the exact opposite of Lucy. While Lucy's default personality is serious and cold, Nana's is friendly and kind; Lucy's split personality "Nyu" is similar to Nana's default while Nana sometimes goes into trances and acts cold like Lucy's default personality. One time in particular was remarkably similar to Lucy's fall into the path of a cold-blooded killer, and it literally took the force of a magnum bullet grazing her skull to knock her back to her senses. Nana is in the middle of the spectrum of Lucy's split personalities: she's not as mature as Lucy, but more mature than Nyu. She is in fact extremely childish due her young age.
Voiced by: Yuki Matsuoka (Japanese), Sasha Paysinger (English)
