Bellundra has a broad, weather-shaped face, a blunt chin, and skin powdered with fine gray forge soot that survives even a careful wash. Her dark, springy hair is cropped close at the nape and pinned up with a blackened copper tally tag. She walks with a measured, heel-first tread that makes her seem to claim more floor than her average height warrants; she is only dimly aware that people step aside. A small brass whistle hangs at her throat, its mouthpiece polished smooth while one side is deeply worn from years of being rubbed by her thumb. Unexpectedly, she keeps a tiny sprig of mountain thyme tucked into the whistle's cord, replacing it whenever it dries.

Bellundra is exacting but not cold: she gives clear instructions during a crisis, then makes time to remember who was frightened. She distrusts grand assurances yet privately hopes the party can accomplish what she cannot. In public she is economical and guarded; around tired workers she tells dry, surprisingly silly stories. When she feels responsible for danger, her caution hardens into interference.

Bellundra learned runework at a mountain forge where accuracy mattered more than inspiration: a crooked line could crack a support stone and bury the whole shift. She became known for clean repairs and an unwillingness to sign off on hurried work. Years ago, during a collapse in an older tunnel, she heard the forge's warning bell too late. Her mentor shoved her clear and died beneath the fallen lintel. Bellundra has carried his whistle ever since, and the experience turned her from a confident craftswoman into a meticulous monitor of every risk she cannot control. Now, in Session 5: Runes of the Mountain Forge, she has been tasked with quietly securing the shard's recovery. She watches the party's decisions and studies the shard's effects, hoping to keep the recovery contained and prevent a public scandal. Her ongoing conflict is that concealment may protect the forge workers today while leaving them exposed to a greater danger tomorrow. She still exchanges terse letters with her former apprentice, who believes Bellundra's secrecy is cowardice, and she owes a dangerous favor to the foreman's family for keeping the old collapse inquiry quiet.