Eri Ninamori is Naota's classmate. In the series, she is referred to as 'Ninamori', her last name. She is the daughter of the mayor of Mabase and is class president. Ninamori has N.O. powers as well: Naota's third robot, which appears at first as "cat ears" transfers to her instantly in the 3rd episode, while the two of them are fighting, as the Medical Factory's siren blows. She projects a proper, even slightly stuck-up personality, and conceals personal information to an almost obsessive degree; she does not even let her classmates know that she needs corrective lenses, instead wearing contacts while at school. Even with her class president status, however, Eri isn't above breaking the rules to get what she wants. She rigs the voting during the casting for the school play in order to get the lead role and have Naota cast opposite her, which (along with letting him see her wearing glasses) hints at her crush on Naota. Other hints are her expressed dislike of Mamimi and a final scene with Naota by a vending machine that mirrors Mamimi and Naota's early-series interactions. Ninamori is highly intelligent, if a little jaded. Much like Naota, Ninamori attempts to act mature, and although her parents' problems trouble her deeply, she refuses to admit it until near the end of the series. 

Naota is a detached sixth grader afflicted by the pangs of puberty. He's fooling around with his brother's ex-girlfriend when a crazed girl on a motor scooter runs him over, brains him with a bass guitar, and moves into his house. This pink-haired girl, Haruko - who claims she's an alien - hurls Naota into the middle of a mega-corporation's secret agenda. Oh, and now giant battling robots shoot from his skull. Mix in mind-bending animation and tunes that echo through your cerebellum to top off the trip that will have you falling hard for FLCL. 
 
(Source: Funimation)

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Melissa is a classically trained singer and dancer; she is a Coloratura Soprano who can sing from an F below low C to the F above high C. Sister of voice actors [Tom Fahn](https://anilist.co/staff/95771) and [Jonathan Fahn](https://anilist.co/staff/105753). Sister-in-law of voice actress [Dorothy Elias-Fahn](https://anilist.co/staff/95537). 

[Synchronkartei](https://www.synchronkartei.de/sprecher/542/2)

The daughter of [Walter Reichelt](https://anilist.co/staff/139854/Walter-Reichelt).

Naota is a normal Japanese 6th grade boy but when his older brother leaves for America to play baseball, his brother leaves his 17 year old girlfriend Mamimi behind. Mamimi is sending mixed signals and advances to Naota, and he doesn't know what to do about her. But to make matters worse, Naota's world is totally turned upside down when he is run over by a woman on a Vespa. During their first encounter, she hits him over the head with her guitar, which then causes a horn to grow out of his forehead. She calls herself "Haruko" and her presence changes Naota's life to even further insanity. 
 
(Source: Anime News Network)