Relations[]
Mamimi Samejima[]
Mamimi is convinced that Canti is a god. She calls him "Canti-sama" as a sign of respect, believing him to be "The Lord of Black Flames" from a video game she plays. Most of the cast calls him by this title throughout the rest of the series as well.
Naota Nandaba[]
While Canti doesn't speak to any character within the anime, he frequently speaks to Naota in the manga. He seems to be more sympathetic to Naota's situation, much to the boy's annoyance. They are also seen practicing baseball together in the manga.
Haruko Haruhara[]
Haruko treats Canti much like a slave, forcing him to do her bidding. Initially, she wants him to be her assistant, which, for her, means making him do all the work she was hired to do, but she quickly realizes he is only good at house chores and small errands. She recognized him and was surprised to see him when she returned to Earth.
Atomsk[]
Atomsk can manifest through Canti, with Naota serving as the catalyst. Atomsk's symbol appears on Canti's screen when he absorbs Naota; the symbol is a corruption of the kanji characters for "adult" (大人). This symbol also appears on him when Naota "swings the bat" in Full Swing. The symbol that appears when Canti is absorbed by the terminal core in FLCLimax is similar, but uses the characters for "child" (小人) instead. Whenever Naota is absorbed, Canti's physical strength is increased and he gains the ability to transform into an antitank gun called the "Overdrive Technique" in the manga.
In the manga, it is strongly hinted that the Canti character and Atomsk are one and the same, with the robot only being a shell that he manifests through. Atomsk exemplifies this when he possesses Canti in Progressive, this time not for Naota or Canti's benefit.