El Laberinto del Fauno (The Labyrinth of the Faun"...I think the faun is a very unique perseption of Beelzebub. Del Toro never states that directly...at least in the making and things I read about him after, but he makes sure to note that "Pan's Labyrinth" was just the U.S. title labeled by the film company. He said the faun isn't at all Pan.
Think about it...On the final test and most important, he tried persuading Ofelia to go the wrong way along with several other signs that seem to try to lead you to maybe think that. I think it is a really neat perspective.