Okay, this is purely hypothetical, and only inadvertently related to sci-fi/Stargate, but here it goes.
Let's say there's a haunted house, like the Amityville Horror house. In the house, there are evil spirits or demons, or whatever. It's creepy, it's scary, and it's clearly haunted.
One day, for whatever reason, Anubis (in his cloak and weird event horizon mask), or Emperor Palpatine from Star Wars, or Darth Vader enter the house alone. (could even apply to a Shadow or another powerful evil being from sci-fi).
1) Do the evil spirits or demons or whatever they are recognize Anubis/Emperor/Vader as evil, and do they know better than trying to attack?
2) Would the spirits be frightened of Anubis/Emperor/Vader?
3) Would Anubis/Vader/Emperor/other evil powerful being be disturbed or frightened of the evil spirits/demons?
I know these might be lame questions, but I guess I wanna know if evil recognizes other forms of evil and can evil be frightened of other evil? How does it work? Any thoughts?