Blackwood's Guide to Dangerous Fairies is a novel by Guillermo del Toro and Christopher Golden that serves as a prequel to the recent remake of Don't Be Afraid of the Dark. What's most interesting (and most game-inspirational) about it is that Blackwood's tragic story is interspersed with an (un)natural history of malign fairies of the world, illustrated by Troy Nixey standing in the the fictional Mr. Blackwood. Nixey's art reminds of Guy Davis or Duncan Fegredo--which means it really fits the material well, even if it doesn't exactly look like the work of a guy (Blackwood) who the movie tells us that some people thought was "better than Audobon." Check these out:
When tooth fairies go bad--the toothbreakers.
Just flipping through the pictures ought to provide plenty of monster fodder for fantasy, urban fantasy, or horror games.