Just a few idea's then that may or may not worth considering, assuming you didn't plan for them already of course, in which case I apologize in advance for stating the obvious.

One idea might be to have the cast/players construct a sort of codex of the things they experience/meet/chase away/get chased by or just simply supernatural entities that people think up and want to share, in a separate dedicated guild page. A book of nasties, as it were.

As for the character sheet, assuming a player is an 'aware' human instead of the usual life history focus more on an event that triggered their awareness. If it was a supernatural entity an optional codex entry could add some depth, plus serve as potential plot devices later on, say, as the subject of an investigation?