Well I put my character in the regular world, Azrael has no control over the nexus, he merely goes where it takes him and hopes his brethren are there. Your character could come to the regular world for escape and feeding and take interest in my character. The discovery of other supernaturals might spur him on to a different world after the progenitor`s crow gives him a hint after he is confronted and confused about your character. (Run on sentence much?)