Gutterglass are the quiet custodians of civilization's overlooked spaces. They know which baker leaves bread out after midnight, which bridge groans before it fails, and which locked door has not been opened in fifty years. Small enough to vanish into a crowd and observant enough to notice what rulers miss, they turn survival into an art of cooperation, improvisation, and carefully preserved memory.

Gutterglass are compact beast-folk with soft fur, expressive ears, narrow muzzles, dexterous paws, and long balancing tails. Their ancestry resembles a blend of small urban mammals, with broad variation between mouse-like, squirrel-like, rat-like, and dormouse-like features. Fur colors range from smoke gray and brick red to cream, black, mottled brown, and pale gold. Their whiskers are highly sensitive to air currents, and their eyes are adapted to dim streets and enclosed spaces. Gutterglass clothing is layered and durable, usually featuring many pockets, loops, hidden fasteners, and patches that record household history.

Gutterglass society is organized around households rather than bloodlines. A household may include relatives, apprentices, lodgers, widows, old friends, rescued children, and anyone who has earned a place at the table. They value competence, reliability, and the ability to make room for another person. Childhood education is communal and practical, covering local history, navigation, first aid, bargaining, repairs, and the etiquette of borrowing. Public reputation matters greatly, but so does the private record kept by neighbors who know whether a person returns tools, pays fairly, and shows up during a flood. Gutterglass celebrations are noisy, crowded affairs held in courtyards, rooftops, and market lanes, with food passed from hand to hand and stories told in overlapping voices.

Gutterglass religion is usually local, practical, and layered over older traditions. Many honor household ancestors, civic founders, protective spirits of bridges and wells, or saints associated with craft and shelter. Their ceremonies commonly involve repairing something, sharing a meal, or speaking the names of people who have died without monuments. Gutterglass culture favors neutrality and good, especially among those who value community over personal glory, but any alignment can be found among them.

Gutterglass neighborhoods grow vertically and inward. Their homes occupy attics, basements, abandoned watch posts, warehouse galleries, and the narrow spaces between larger buildings. A single residence may connect to several others through crawlways, roof bridges, laundry lines, or concealed staircases. Architecture favors practical repairs, shared courtyards, rain collection, and doors marked with household symbols. They distrust grand plans that leave no room for alteration, believing a good building should accommodate new families, changing trades, and the occasional hole in the roof.

Gutterglass are woven into the lives of other urban peoples. They may be tenants, shopkeepers, messengers, repairers, archivists, entertainers, or the anonymous neighbors who know which child belongs to which family. Wealthy citizens often underestimate them, while city officials alternately rely on and resent their informal networks. Gutterglass generally judge outsiders by how they treat servants, street vendors, animals, and damaged property. They are slow to forgive condescension but quick to welcome anyone who contributes honestly to a shared problem.