Ninamori Eri (ニナモリ・エリ), 12, is Naota's classmate. In the series, she is referred to as 'Ninamori', her last name. She wears a red shirt with "USSR" emblazoned on the front. She is the daughter of the mayor of Mabase and is class president. While she appears to be a very proper, even stuck-up girl, she isn't above breaking the rules to get what she wants. She cheats during the election for the school play in order to get in the lead role and Naota cast opposite her, which (among other things) has hinted at an interest in Naota. Other hints are an expressed dislike of Mamimi (assumably from jealously) and a scene at the end of the last episode which mirrors Mamimi's interactions with Naota when buying a drink from a vending machine. Ninamori is also very intelligent, if a little jaded. Much like Naota, Ninamori attempts to act mature and though her parents' problems trouble her deeply she refuses to admit it.

Canti (カンチ, Kanchi in Japanese) is a medical robot with what looks like a television set for a head. He was manufactured by Medical Mechanica, but taken over by Atomsk as a way to escape MM. After having his head broken by Haruko he is recruited by her as an assistant, however he proves to not be good for much other than washing dishes and fetching drinks for the family. It is later revealed that Atomsk can manifest through him, with Naota being the catalyst. Atomsk's symbol appears on Canti's screen when he absorbs Naota; the symbol is a corruption of the kanji character for "adult." This symbol also appears on him when Naota "swings the bat" in Full Swing and when Canti is absorbed by the terminal core in FLCLimax. The emotions of Canti are very human-like, despite his looks. He is embarrassed about his broken head (where Haruko hit him) and is looking for the pieces to glue back together in episode two. He wears the box on the back of his head for the same reason- shame. Canti also dons a halo and fake wings (which Haruko was wearing in early episode two). As he schleps around, even Mamimi is convinced she is seeing an angel. (She calls him Lord Canti after "The God of Black Flames" in a video game she plays which is what the rest of the cast call him throughout the rest of the series). Apparently, he can also eat curry with his "mouth," but it is never really explained how.