In Argentina it is who lives in a shanty town; it is a discriminatory and derogatory adjective, in a social, cultural and even criminal sense. It is also said of what is related to the villa.
It means he lives in a villa. In Argentina it is derogatory and means that he lives in a squalor village, which lives in a slum or slum. In Colombia villero is a honeycomb of villas that is a variety of bumblebees or bumblebees.