The Night People have never been described in Native American legend. After 20 years of research, both in the field and in books; the Night People appear to be supernatural. Perhaps the lack of description is due to the fact that the Night People have interbred with the Native American tribes.
What are the Night People?
The Night People are beings that have crossed over to our reality. This is not a reference to spirits, instead this is a reference to physical beings. These Night People can interact with our world, and in many cases, can have children with humans.
Why are There No Descriptions of the Night People?
People are afraid of what they do not understand. That is why this information has been kept by the medicine societies.
How did These Beings Arrive on the Earth?
Chiefly, the Night People arrived through magnetic anomalies. These anomalies occur when there is massive tectonic shifts. Tectonic shifts end up causing magnetic spikes that create temporal apertures for them to enter.
Are the Night People Evil?
The Night People are not inherently evil. They are instead, products of their environment. This is inherent in all species.
Conclusion
The Night People are simply travelers that for whatever reason, have been stranded on Earth. During our current time period, there have been many events to cause crossovers. People will see them and wonder, but they are simply strangers who are trying to exist.
They should not be viewed with hatred. Instead, they should be treated, as we ourselves, would like to be treated.