7. Dr Hannibal Lecter (Hannibal)
I'd hope this one speaks for itself. Dr. Lecter eats people. He is a cannibal. Lecter's doctor credentials are in the field of psychiatry, which he uses to "help" the FBI catch serial killers. Unbeknownst to them, he is actually the cannibal that they're looking for, known as the Chesapeake Ripper. Sure he's a great cook, but is it worth it to attend his dinner parties when you're more likely to end up as the main course than the guest of honor? Even if you were invited as a guest, you'd probably be eating parts of a person you know. One to be avoided at all costs, unless you think you'd make a particularly good steak.