User blog comment:Rafe Adler/"The Big Empty" Discussion/@comment-1031724-20171103193710/@comment-27669262-20171103200827

Metatron is not in the Empty. According to demons being there, it doesn`t matter that you were human once. If you end up as a demon eventually, you will be sent to it. The fact that Castiel could be resurrected in S9 by an angel proves that he didn`t come to Empty after death.

I`m more interested in where nephilims and cambions are sent to. They have equal chances to end up in either empty or Heaven/Hell.