Source: Magnimar, City of Monuments, pg(s). 46
Magnimar's Sewer Goblins are a collection of various goblin families that call the sewers of Magnimar home. These goblins rarely form tribes or other larger groupings, preferring instead to congregate in bands of a dozen or so extended family members.
In the past, the goblins of Magnimar's sewers competed for space and resources with a population of mites, small fey who had made their way up from the Darklands realm of Nar-Voth. The sewer goblins eventually won this contest and drove the blue-skinned creatures to migrate to other areas, such as the pilings of the Irespan.