Hello

I was wondering if there is a way to stop special NPCs, namely Riekling warriors, ancient DB's, etc, from just appearing out of nowhere and joining in on my battles? It can be helpful at times, but I'm noticing they are starting to appear more and more frequently. Getting into a small fight with a draugr, or even an albino spider, has me being pushed out of the way as these bothersome vigilantes swoop in to ruin my fun. I have zero people 'following' me at the time, yet I can't seem to tell them to go away without slaughtering them.

Any ideas? This is on 360, so no helpful console commands, unfortunately.