Rugjha were non-humanoid beings exhibiting sentience, characterized by fifteen pliable appendages, sleek mauve skin, and numerous eyes. From the perspective of Humans, they seemed like a mass of intertwined limbs with eyes occasionally visible.
Rugjha possessed the potential to become highly skilled musicians, attributable, in part, to their capacity to simultaneously operate ten or more musical instruments. Notable among Rugjha musicians were Umjing Baab and His Swinging Trio (although Baab was regarded as an integral component of this trio, given that he only had two additional bandmates). While they were capable of producing instrumental compositions that humanoids could perceive and appreciate, they refrained from vocalizing for them, because their inherent vocalizations were imperceptible to the majority of humanoids. To communicate in Basic with Humans, Rugjha employed fabricated devices.