oh, if he defied something that one of the gods told him, then later on that same god might send another Youkai to a different son of the pharaoh- leading to direct competition with our main characters. 

And if it's scenes with other Youkai that we're talking about now then some loyal followers to the gods might be against him, but others who are a bit more on the roguish side of the spectrum might secretly support your Youkai and help him out every now and again. 
As a side note I should probably mention that I had this idea (that a friend helped me out with technically) that the Youkai complained about spending all his time with people so he pushed for having a room connected to the son's bedroom chamber where he keeps a few actual jackals- or 'some of his own kind'. The Youkai sleeps just fine at night but sometimes the son can still hear one of the creatures up and about no matter what the hour is.