Gutterglass are the city's overlooked custodians, clever beast-folk who know which baker leaves out yesterday's loaves, which magistrate takes bribes, and which alley floods before the rain begins. They build lives in the seams of civilization, turning forgotten spaces into warm homes and neighborhood knowledge into a form of quiet power. A gutterglass adventurer may be a courier, investigator, tinkerer, healer, scavenger, or simply the one person in the party who notices that the inn has two kitchens and only one chimney.

Gutterglass are compact beast-folk with rounded ears, expressive whiskers, nimble hands, and long tails that aid balance rather than serving as true limbs. Their faces range from mouse-like and vole-like to sleek, foxish forms, with small variations shaped by family and neighborhood ancestry. Fur colors include soot gray, russet, cream, brown, charcoal, and mottled combinations that resemble old plaster or weathered stone. Many develop pale reflective flecks in their eyes or faint mineral sparkles along the whiskers after generations spent around city glassworks, masonry dust, and subterranean waterways. Their clothing is layered, durable, and full of pockets, with bright personal accents used to identify household, trade, or district.

Gutterglass society is organized around households, block associations, trade circles, and informal networks of mutual aid. Family may include blood relatives, former tenants, fosterlings, business partners, and anyone who has shared a winter meal under the same roof. Children learn the city's geography through games that involve memorizing bells, drainage patterns, market calls, and safe hiding places. Reputation matters deeply, but it is measured by reliability rather than prestige. A gutterglass who returns borrowed tools, protects a neighbor's child, or tells the truth about a dangerous street may be more respected than a wealthy merchant. Disputes are commonly settled through witnessed bargains, public apologies, or the exchange of useful labor.

Most gutterglass honor household saints, local spirits, ancestral figures, and personified civic virtues such as Shelter, Fair Measure, Open Doors, and Returning Safely. Their shrines are tucked into wall niches, beneath staircases, or beside public fountains. They tend toward neutral and good alignments, valuing mutual obligation over abstract purity, though an individual may become lawful through devotion to civic order or chaotic through distrust of every official system.

Gutterglass communities favor old, densely built districts where generations of repairs have created layered spaces above and below the streets. Their homes occupy disused bakeries, attic clusters, cellar networks, waterworks, and narrow buildings joined by bridges or concealed doors. Architecture is practical but personal, marked by colored window glass, painted lintels, hanging herb racks, and small brass plaques commemorating former residents. A gutterglass home is rarely large, yet it almost always contains a hidden pantry, a guest nook, and at least one escape route.

Gutterglass are woven into urban life but are often underestimated by those who mistake familiarity for servility. They may serve as couriers, cleaners, porters, clerks, repairers, cooks, archivists, and neighborhood advocates, maintaining relationships across class lines. They are cautious around aristocrats and institutions, yet individual gutterglass may admire a person who uses power responsibly. Rural peoples sometimes find them overly alert or crowded in their habits, while other beast-folk often recognize them as practical allies. Gutterglass communities remember insults for generations, but they also remember genuine friendship with equal precision.