AIM Thought Being

AIM though being (AIM思考体) is a term used to refer to a consciousness that exists through the AIM dispersion fields of Academy City.

Yakumi Hisako
Yakumi Hisako's consciousness has been transferred to the Shading Computer that uses the AIM dispersion fields as a medium. He refers to herself as an AIM thought being, and that she has stepped into the realm of Kazakiri Hyouka and DRAGON. What differentiates her from Kazakiri Hyouka is that she can communicate with others in such a state, and has shown no way of being able to physically manifest herself. Moreover, she has shown no inclination of having physical form and rather wants to "transcend" being a part of the AIM dispersion fields, becoming even greater than Kazakiri Hyouka and DRAGON, using either the water of the oceans or the winds of the world for the Shading Computer's medium, which had allowed her to become an AIM thought being in the first place, but as well as trapping her in the one place it is concentrated, Academy City. While being an AIM thought being she has no body.

After Kamijou Touma destroys her AIM thought being form, her consciousness becomes an information life form. In a way, she becomes free from the bounds of being AIM thought being, but still even more limited as she used her "scent" being emitted by the swarm of man-eating cockroaches that destroyed her body earlier as the processor for the Shading Computer.

With regards to Artificial Angels and DRAGON
It is unclear on how similar an AIM thought being is to Artificial Angels or beings such as Aiwass (DRAGON), since the latter has existed before the foundation of the City, or if they can be termed as AIM thought beings as well. Hisako notes that after becoming an AIM thought being, she has "stepped into the realm" on both Kazakiri Hyouka and DRAGON, most likely referring to their existences that requires the use of the AIM dispersion fields of Academy City. One clear distinction between an AIM thought being between them is that the both of them cannot communicate and interact with other people without the use of special circumtances affecting them. For example, Kazakiri Hyouka could only interact with Index only after she was mysteriously brought into the world and away from the Imaginary Number District gaining a physical form, most likely by Aleister Crowley's manipulations. Aiwass on the other hand requires a special code inputted into Last Order in order for him to be brought into the world. All three can observe the "real world."

As for bodies, Kazakiri Hyouka the moment she gained "consciousness" had body inside the Imaginary Number District, this is unlike Hisako who had no body to speak of before Fremea Seivelun hijacked the Shading Computer. Aiwass is presumed to have a form before even the founding of Academy City, and is the reason why Aleister can modify him to give him defenses against suicide and opponents as he has no inclination to defend himself. As for the the artificial angels of the Imaginary Number District, though they may not have control or awareness over themselves, they retain a body that can be manipulated by Hyouka.

It can be concluded that the beings that require AIM dispersion fields to exist have properties similar to an AIM thought being, but it not wholly what defines them, as they are not a mere consciousness that exists through AIM.