if im wrong then I apologise, but how can you call this person your friend, he sounds more like your enemy,You are wrong. This is a real person.
Besides that have you considered your friend is possessed, you should keep your distance as your not safe, it's sound like a demon that wants to harm you.
I would try praying to have your friend dilivered, I take it you've tried to ask him to become a Christian ?.
I assume this is something you would have done ?
This is why I say it's best to stay away