The crumb ghoul

The crumb ghoul is a little goblin that scours around the room for crumbs. He doesn't eat them, rather he simply looks at them. You might hear his "Oos" and "Ahs" as he gazes at their splendor. He bears no ill will, and is simply fascinated with crumbs for reasons unknown.

Of course, if you have no crumbs, he'll simply not come out. Thus, it's necessary to drop a pinch of food crumbs if you wish to see him. He's quite perceptive though, and if he senses you gazing upon him, he'll retreat to the bed immediately. Though he'll likely reemerge once the coast is clear to continue gazing at the crumbs.