Chii is a Persocom who is found by Hideki Motosuwa in a garbage dump. At first, she is only able to say "Chii", thus earning her that name. Later on, she is taught various things, and is eventually able to communicate with other people.

Nonon Jakuzure is Honnouji Academy's Non-Athletic Committee Chair and one of the Student Council Elite Four. She is a childhood friend of the Student Council President and the final member to battle Ryuko Matoi in the Naturals Election with her Three-Star Goku Uniform, Symphony Regalia.