Maggot

Theses creatures were engineered by the Elgone ARS Conglomerate to oversee the factories and help with developing new technologies. In the future where morality was replaced with greed, Conglomerate's subject Biogen Laboratories devised a method to cultivate organism with help of nanobots. They started to engineer the organisms to grow to be compatible with mechanical and electronic components also increasing their brain capability. These creatures started as prototypes and test subjects in order to develop a way to lift humanity to another level of existence. Although by "humanity" the Conglomerate understood these who are worthy, born with power... themselves. 
Although the first attempts failed after few generations of test subjects small number shown a lot of promises in adaptability and the Project Bethel entered a new stage.

Maggots as called by commoners, or Brains by the standards of Conglomerate are extremely weak creatures with no biological limbs. They are equipped with a pair of mechanical arms to perform simple manipulations (and mostly hold their Thoughts Bulb in cases of Alpha Brains). They posses no legs but are able to move around through levitation which they perform using their enhanced psychic abilities and 4 graviton amplifiers on their backs. Maggots can use simple telekinesis and are unable to defend themselves, although they usually work in high security areas or are accompanied by at least one cyborgized guard. 
Their bodies are small and resemble an overgrown worm or underdeveloped fetus with huge eyes and spiky teeth, a crack on their heads exposes large brain connected with Thought Bulb via wires and cables or SciEng Capacitor on their backs. Rarely an exceptional individual will be equipped with both of these devices.

Brains are known to look down on humans and treat them as under-beings who are only made to be slaves of Conglomerate. They usually express their disgust with humans as much vocally as possible but only if they are in a presence of their guards. They known their services are required by Conglomerate and they often abuse their power especially if it can harm fully biological lifeforms. These creatures are cowards and will run away as soon as there is bigger commotion or they hear a louder noise. Maggot will only try to defend itself if there is nowhere to run although they can only exert enough telekinetic force to startle a cat or small dog, unless they will stop levitating which is very unlikely as they despise touching any surfaces with their bodies. Alpha Brains are more powerful and can actually lift a human and throw it a couple of meters away while maintaining their levitation level.