Concept Art Writing Prompt: The Monsters Wore Terrible Disguises

So creatures try to infiltrate humanity with sophisticated costumes that make them indistinguishable from humans. Others...not so much. Let's hear your stories about these poorly disguised creatures.

Artist Michael Dziekan created "Disguise" for an exhibition on child slavery (via reddit). Post your stories inspired by this piece here in the comments. (My piece is posted there as well.)