(You don't have a brain though, you are a brain piloting a large incredibly complex suit 3D printed in the built in replication factory of a precursor, you sit inside a spheroid container in which you are linked to a pair of fluid filled cameras, a flat sensitive plate covered with fractal sticks used to analyse airborne chemicals, and two complex machines that make sense of vibrations from afar as well as finding out the orientation of the suit by several tiny holes linking to strings attached to several points on you, on these strings and many others, tiny robots made out of a single molecular protein run at impossible speeds across your mechanical suit so as to activate the pairs of electrically operated winches that move the suit, the entire thing is reinforced with a self repairing alloy of various chemical elements composed of roughly 206 moving parts jointed together by a softer shock absorbing material. This rigid frame is harder than concrete and will grow itself anew if it is ever snapped or cracked. Over and within the hundreds of tangled electronic winches that cover this are two sacs that continuously are pulled inward and outward by several of the winches, each one has a pipe protruding from it's upper side, these join together after a short journey and lead to two holes in the front of the topmost region of the frame, through these your suit can absorb the hundreds of billions of pairs of jointed oxygen atoms that it needs to stay operational, this is then processed to remove impurities and shot through the suit with a beating pump located between the oxygen sacs, and travels on billions of short-lived saucer shaped robots after it is attached to a chemical within these robots, among these robots are multiple subtypes of security robot ready to detect and destroy any invasive materials, as well as small robots with a tendency to stick together that are used to glue up damage to the suit until proper repair, below this there is a soft asymmetrical lump, within it is a complex factory where all of the saucer shaped red robots and their varied white companions will one day be taken for recycling as new ones are created inside the hard inner framework. Over 499 other jobs are performed within it, not all fully understood by brains.
Somewhere below this is a large bag which joins up with a long pipe leading up near the oxygen pipe to a large hole, in which are several external knives and anvils in several different types of fuel, these are used alongside a clear secretion to break down fuels of various kinds into small pieces which then are thrown down into the bag. Where they are shaken periodically as they sit in a pool of potent acid to be further broken down into a chemical solution which is afterward drained into a huge tube in which many tiny protrusions begin absorbing this processed fuel where it is purified and mixed with the saucer robots, attaching to them to be sent all over the suit providing power for it's many other functions.
The suit is shaped as a rough rectangle with several bar shaped supports which protect the important oxygen absorbsion and distribution apparatus, from it come four sticks in two identical pairs with a joint almost exactly halfway through them, on the tip of these are five tentacles protected by small regrowing plates.
The suit is capable of scanning and copying it's exact unique structure to be scrambled and mixed in order to form a hybrid suit and brain.
This entire structure is padded with a layer of insulating foam also capable of holding reserved pieces of processed fuel, which is further protected by several self-repairing self-hydrating layers of thin but hard material, this may change it's composition somewhat in order to avoid damage by ultraviolet radiation.
Even this layer too is protected by many small fibres found protruding from it.)