Trolls, in their natural habitats, are very aggressive, territorial, and look to start fights with other residents. Most trolls come off as unintelligent and disrespectful. They commonly inhabit forums and other community sites, but may be seen at events or even in everyday life. They survive off negative waves and arguments, leading scientists to believe that they are capable of producing their own food from this energy. Trolls often gather this energy by planting a "comment" and using it as bait. The use of capital letters, insults, and swearing is often present in these comments. Trolls can only be handled by trained professionals, often by blocking their IP address. Most of the time, the troll then leaves to find another area to reside.
In short, trolls are big meanie faces and nobody likes them.