A creepy, socially awkward male who dwells in internet cafe-type areas and plays Magick and World of Warcraft continuously with other dwellers. A Dweller is easily recognizable as lonely and desperate for female attention of any kind. They will hit on anything that comes within eyesight. Comparing girls to characters from their favorite anime is a popular pickup line.
Jill: Oh no, Barbara, that dweller is coming this way.
Barbara: What?! No! Hide!