Nanaho is one of the two vice presidents of the Gokujou Seitokai and also the leader of the Assault Squad, using a yo-yo as her weapon. She is very afraid of lighting as she flinches horribly when it strikes and cries out causing people to look at her strangely and she quickly and angrily yells "What?!" She secretly has a great love for "girly" things, which can be seen from the decor of her room. This provides a stark contrast to her tomboyish outer appearance and behavior. She was first skeptical by the idea that Pucchan was magical, but later learns that he can talk on his own hand. Nanaho is also an old friend of Kanade and protects and advises Kanade in various matters by her own free will, and not because of the obligations that have been bestowed to the Kinjo family to protect Jinguuji family from generations ago. She has 6 brothers and she is the youngest child of her family. Since childhood she was trained to protect Kanade, which caused her to bear a grudge towards the other girl until Kanade told her that she was free to do as she wanted. (Source: Wikipedia)
A young man from the Iwazakura conglomerate. He is an acquaintance of Kanade, and is deeply in love with her. He will stop at nothing to let her know how much he loves her, even though she has no feelings for him in return.
He is one of Nanaho's older brothers.
The Will of the Whole Misaka Network, abbreviated as the The Whole (�体 S�tai) in the original text, is a character introduced in Shinyaku Toaru Majutsu no Index. She is a single organic system, a thought entity, created from the gathering and consciousness and egos of 20,001 Sisters. A non-corporeal character, she possess other Sisters in order to give out timely advice to the protagonists in times of need. (Source: Toaru Majutsu no Index Wiki)
Mitsue is Yurie's best friend. She's very down to earth but wishes that more interesting things would happen to her throughout the series (her love life). Yurie often goes to her for advice and although her advice is simple, and usually is just common sense, she is always right. She is usually possessed by Yashima when he needs to communicate with people or when he wants to perform. [Wikipedia]
She is the owner of a software company in episode one. She is a strong, independent and intelligent woman. Moreover she is really hot and wears expensive, sexy clothes. She does not believe in showing sincerity to men because their true intentions, that's why she never employs men. Kintarou is the first man to work in her office.