Echo possesses a striking, bruised-violet complexion that seems to absorb the harsh mountain light. Their most arresting feature is their silver eyes, which lack pupils and shimmer like mercury. They are tall and lithe, moving with a fluid, silent grace that makes them seem to float over snow. Their horns are slender and sweep back into a crown of sharp points, each intricately wound with fine silver wire that catches the wind to produce a low, melodic hum. Paradoxically, while they wear the rugged, salt-stained furs of a mountain traveler, they possess the delicate, un-calloused hands of a courtier.

Echo is a master of mirrored empathy, presenting a calm and helpful facade that puts the desperate refugees at ease. They are genuinely patient with the elderly but secretly disdainful of the Refugee Leader's perceived weakness. Internally, they are a storm of calculation, constantly weighing the life of their kidnapped sister against the lives of the monastery inhabitants. They act with absolute certainty in public but suffer from bouts of silent, staring paralysis when alone in the dark.

Originally a cartographer in the lowlands, Echo's life was shattered when the warlord Lord Vayn razed their village. Recognizing Echo's photographic memory for terrain, Vayn spared them on the condition that they act as his eyes in the mountains. For six months, Echo has moved among the Sky-Reach Monastery refugees, providing legitimate help to build cover while secretly mapping the monastery's rear defenses. Every three days, they send a coded message via a trained mountain falcon, knowing that any failure results in their sister's death.