Sandy Petersen, the creator of The Call of Cthulhu Rpg, said you shouldn't have good ghouls in your game because that renders ghouls less scary. I disagree and offer the following as a rebuttal.

“Your investigators stumble into the Aberghast mansion's dining room after bashing open the locked door. There's been no sign of Sweetheart, Mr. Multz, the pitbull, or Frederick, your ghoul friends, despite the strange call you received from Frederick, and the locked dining room is the last place you have to look. You really should have just given up and gone home.

Sitting at the bloodsoaked table in a blasphemous parody of the last supper are thirteen ghouls you don't recognize, dressed in the finest clothes they could plunder from graves. You spot a magnificent Victorian suit stained with the juices of a corpse, a delicate wedding dress bleached white, an eighties shoulderpad suit still smeared with cocaine, blood, and brain juice, an American general's uniform caked with the mud of the trenches, and even the costume of an Egyptian noble. The faces glaring at you from above this faded finery display the worst aspect of beast and man. Dull malicious eyes glimmer with an obscene hunger and a razor-sharp intellect and wormlike tongues gently caress lipless mouths filled with far too many sharp bloody teeth. The worst horror is what they have been eating however: you recognize, among the far too fresh corpses, the remains of your friends. You can see Pitbull's weirdly squashed and elongated skull through the chunks they've ripped off her head. The ten thousand plundered wedding rings and love tokens of Sweetheart lie scattered among his half-devoured remains. They used Mr.Multz's shovel to crack open his skull and shucked his brain out like an oyster. Frederick's head lies on a plate in the center of the table. The expression on his face is a mixture of stark terror and seething rage. You can see the fancy ghoul had been ripping chunks and eating bits of his face.

“Oh save us brave human heroes! Save us !” the ghoul in the center says. In Frederick's voice. You didn't notice before, but the cell phone you bought Frederick, never Fred, is right by his right hand. Almost as one they step onto the table and begin to advance on you. Roll for sanity. “