A phenomenon in which the AIM diffusion fields of espers connected to the Level Upper network are merged together takes a corporeal form.
A close-up of the form taken by the AIM Burst
Appearance
The consciousness of the espers connected to the fetus.
The phenomenon initially took form of a giant transparent levitating tentacled fetus with a halo on its head but it eventually grew into a grotesque mass due to its ability to regenerate.
Like any infant it uses emotions to perform decisions or rather it is an amalgamation of the subconscious emotions of the people connected to the network and it lets out a screeching sound as if it was crying. Because it is connected to the Lever Upper network when it appeared it caused convulsions on the comatose Lever Upper users, it is also shown to manifest the voices of the subconscious of the espers of the network
The AIM Burst has a rectangular prism core within it that keeps it together even if the network is disabled
Abilities
It is shown to be quite powerful as it regenerated and grew larger everytime it was damaged, it can release a powerful energy blasts and has the ability to materialize and manipulate glass-like objects to attack an opponent and many others, though these abilities might be derived from the collective abilities of the espers in the Level Upper network and not is an innate ability of the creature.
Plot
The AIM Burst screams after it is born.
The AIM Burst first appears after the Kiyama Harumi loses control of the Level Upper network and causing the birth of the creature, it was noted by Uiharu to be in pain and seemed to attack only when provoked, it was also a very dangerous creature having the ability to regenerate. Misaka Mikoto does battle with it to distract the creature as it was heading for a nearby Nuclear Power Facility long enough for Uiharu to disable the Level Upper network, it then loses its regeneration abilities and is subsequently defeated by Misaka by using her Railgun to destroy its core.