There are types in most of the things like characters, attitudes, nature etc etc. But let's see now at one kind of people like good people and then there is the other kind the bad people but a combination of good and bad is deadly dangerous.
As they have all the characters in them and can use whichever, whenever necessary. so be careful with such people. I am not saying that these people are wrong or bad to be frank I admire them and it's good to know some bad natures but should be aware of what we use and where we use it.