A spirit of judgement and punishment
That very special day when the people try to use up all of the most horrible deaths for the coming year.
There are a lot of bad people out there. That is why we must torture you: to keep you safe.
Many and varied are the ways of extracting a confession or ending a criminal’s life, and the one usually follows the other.
A demon who isn't some hideous creature bent on consuming souls, bu is, in fact, a likable chap who enjoys having pleasant chats with people - trying to talk them into becoming his servants.