People are fascinated by evil because it's mysterious and it doesn't seem to have a rationale behind it, and the second you say that Hannibal Lector was abducted as a child and he had to eat his sister or something like that, it becomes immediately mundane. The character becomes mundane.
All you have in comedy, in general, is just going with your instincts. You can only hope that other people think that what you think is funny is funny. I don't have an answer but I just try to plough straight ahead.

