If someone believes that Jesus was the Archangel Michael (and not the Son of God) then they aren’t Christians at all. I have always heard JW were Christians and that wouldn’t be the case. IMHO
I don't know what they believe. I am sure that any fair definition offered by a non-Jehovas Witness would be incorrect, especially if started with "monsters".
Here is what I do know:
I had a good friend, and co-worker in Hawaii that was a Jehovas Witness. A kinder, and more gentle man I have never encountered. He was quite literally honest to a fault. He was ridiculed & tormented daily(sort of the flavor pushed by this thread). He met each slight, slur, and insult with a smile and kindness.
As a living example, he was by far the most Christian person I have ever known.