Kamijou Faction

It is an unstable yet influential group of individuals, espers, and magicians who were allied with Touma, as mentioned by Etzali. After that, it's name is never mentioned by any other characters as the story progresses, so it's name can be considered as non-canon, but the individuals' connection with Touma are canon.

Background
Excluding Index, Touma meets his allies unexpectively, and they help each other in many situations. Their connection with Touma were formed due to many reasons such as they have feelings for him (Misaka Mikoto and Itsuwa), they have respected him (Stiyl Magnus and Kanzaki Kaori respected him for saving Index), their lives were saved by him (Himegami Aisa and Lessar), they were encouraged by him despite they were not human (Misaka 10032 and Kazakiri Hyouka), and changed their ways of living after being defeated by him (Accelerator and Hamazura Shiage). Most of them were affliated with Necessarius or the Magic Side.

Abilities and Powers
Some individuals possesses unique powers or ability which makes them have names for themselves. Because of that, they attracted many people who wanted to obtain or use those powers for different purposes.
 * Kamijou Touma possesses his Imagine Breaker which can nullify anything related to supernatural.
 * Index possesses 103,000 grimoires inside her which makes her targeted by many magicians.
 * Kanzaki Kaori is a Saint, which there are only twenty of them in the world.
 * Tsuchimikado Motoharu is a Magician-Esper hybrid, the only successful one in the world.
 * Himegami Aisa is a Gemstone and possesses the ability "Deep Blood," which attracts and kills vampires.
 * Accelerator is the most powerful level 5 esper in Academy City and he is also at least an Angel-class when "Awakened".
 * Misaka Mikoto possseses the Railgun ability which makes her third most powerful Level 5 esper in Academy City and a very skillful electromaster.