OK, first thing first, Trolls, Goblins and other "wee folk" are essentialy the same thing, the difference is where you come from. They are a type of vampire entity, as such they live sustain themselves by drinking blood. We did not list them under vampire since there are important differences. One of the differences is that these things for the most part are cowards, they avoid human contact as much as physically possible. Just because they avoid humans does not mean that they shun civilization. These creatures have lived off of humankind for thousands of years, mostly they stay near garbage dumps, and sewer lines. Anything smaller than they are is what they hunt (i.e. rats, cats, small dogs), for the most part the most common slang term used to encompass the lot of them is "Shit Eater." The average creature is about 3-4 foot tall, barrel shaped, with a series of pointed teeth and sharp nails. Since these creatures use their environment to their advantage, they cover their scent with whatever is predominant in the area (that means they smell like either garbage or sewage). Actual contact with these creatures is very rare, and normally even if you are in the same area, you may never see them (smell them, yes, see them, no). Another difference from Vampires is that these things can survive sunlight for short amounts of time with only minor injury. Due to their abilities and fear of anything larger then themselves, in depth information is very limited.
Attacks by these creatures are extremely rare, and only appear to happen when they are very desperate and/or have more than three to one odds. Killing these creatures takes a lot of physical force due to their compact bodies and strong skeletal structure. Thankfully these creatures DO NOT carry the Vampire virus, although they have been know to carry other infectus deseases associated with their less than clean lifestyle.