They usually own a-LOT of properties and those properties usually are in the ghetto while they are living in gated communities and mansions.
They don't care who they rent to or what the condition of the properties are in, just as long as they get rent money.
They will rent to the biggest pieces of shit on earth such as violent sex offenders, crack heads, jailbirds, white trash, alkys, junkies, thieves, gangbangers, or just plain assholes.
Usually only accept rent in cash to avoid taxes, may have a history of tax evasion charges, and serve alot of evictions.
When something goes wrong with the house due to neglect, the slumlord usually blames the tenants and raises the rent because he had to fix it.
Most slumlords do not give background checks or charge security deposits. However, if they do give a background check and you have a criminal history, no problem! They will let you move right in. And if they do charge security deposits, they will keep it and say ("you damaged the property more than the security deposit is worth, but i'm going to be nice not take you to court") just to psyche you out of suing him.
The building is now condemned and boarded up HA HA HA.