YMMV / Wilhelm Busch

• Nightmare Fuel: The Faceless black parca (Roman goddess of fate)◊ who sits in a cloud and cuts off the life-thread of people.
• Older Than They Think: "The Virtuoso" not only predates comic tropes. A satirical compilation to his anniversary (with some other works by him thrown in) "showed" that he even predated several art schools, and a few surplus individual artists. ^note  For example, the moor who fell into a cactus reminds of Günther "Nails" Uecker. A joke, of course.
• Values Dissonance: Corporal punishment for kids (by caning). There are also some antisemitic bits in (lesser known) stories. Though it should be pointed out: A real antisemite wouldn't have had three such bits in his work, but three hundred.