The Spacions have very slim and somewhat ominous silhouettes, emphasized mostly by their particularly long arms and thin bodies. The foot on their unique leg allows them to glide silently on most types of terrain. Even when they switch to hopping for more speed they remain quite discrete.
For the Spacions, the brain is the most important organ, even more so then other species. Theirs is so large it occupies 35% of their body in size. Their head not being large enough to contain all of it, part of the brain grows downward around the spin down and to the chest. This massive cognitive power is the pride of the Spacion and the source of their incredible intelligence. However, the large amount of energy required for their brain to function results in a shorter lifespan.