I don't know the name of the trope, but I love it when a ghost or a demon or an alien intelligence tries to take over a person only to discover that that the person they picked is incredibly, terribly, horribly fucked up and not a suitable host.
Could be that the person is in constant pain that's beyond the tolerances of the invading intellect. Could just be that there's already so many voices/so much stuff going on mentally that the intelligence has no way to control the person. Could just be that the person is deeply, madly, truly into Sonic Inflation porn and the demon is like "Nope."



