Robista is a lean male elf with weather-browned skin, long ash-blond hair tied with copper wire, and alert gray-green eyes. He stands with his weight balanced on the balls of his feet, as if perpetually ready to step around a falling shelf or spring away from an exploding experiment. His hands are stained with oil, resin, and dark herbal dyes, while his patched travel coat is crowded with tiny tools, glass vials, folded diagrams, and bits of polished scrap. He carries himself with restless energy, tilting his head toward unfamiliar sounds and studying every mechanism as though it might reveal a secret.

Robista is inquisitive, irreverent, and distractingly enthusiastic about small discoveries. He asks precise questions at inappropriate times, gives names to tools and experimental devices, and regards social customs as interesting mechanisms that he has not yet learned to operate. Despite his eccentricity, he is patient with the frightened and quietly attentive to anyone who is sick, injured, or overlooked.

Robista spent decades in a remote woodland observatory built around the ruins of an older elven research station. He went there seeking solitude, but solitude proved poor company, so he filled the silence with experiments. He learned to repair broken instruments, distill medicinal herbs, construct tiny clockwork assistants, and coax faint magical effects from ordinary objects. His greatest work was a brass seed-shaped device that briefly projected a map of places that did not appear to exist anywhere in the surrounding world. The projection vanished after showing a single symbol, a spiral enclosing an open eye.