pls prove to me that all aliens are not demons or dark entities?

I would only ask this question in such a quality site as this one!!!!the best.
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I really would love a nice little space here where I can come back once in a while to see who has left their 2c on the subject for the day,thank you!!
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Are all UFOs & aliens demons or fallen angels. Why or Why not?

What ratio would you suggest on demons/physical travellers if you are not 100% one way or the other?
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Appologies if this is a repeated,boring question.

peace and nugs,tURtlE