There are beings who are hostile to human life due to their intrinsic nature, just as there are animals and microorganisms that are harmful, but that doesn’t make them evil - as in, intentionally doing harm even when not doing so, would not cause them difficulty. Shamanic traditions recognise this, and shamans learn to control and exorcise these types of beings.
Belial commanded entities like this at our first meeting: Rosier goetic ritual - #9 by Lady_Eva
If beings like that possess someone the results will not be good, and obviously a lot of major demons have the ability to harm humans. To go back to animals, horses have driven human evolution, and provided a base for civilisation, but an angry horse can kill a human stone dead with a few kicks, and they bite as well, they’re potentially very vicious.