These are the jinn that possess, the ones that are the most vile in their torment of humans, the ones that blame the humans for everything wrong with the world. They are the ones that bring the Shaytan to bear on humans, they are the ones that cause death and destruction to befall the unwary traveler, they live in dark and dusty places and cause bad luck. They are the ones that heal a disease and cause a car wreck after.
They are the ones that give riches then cause law suits to take it away, they are dark and deceptive and very dangerous. so you may ask if they are that way, why offer them? I will answer because sometimes justice does not play fair.