If bogeymen are supposedly our own fears of the dark come to life, what happens when we no longer fear the dark?
They shouldn't show up anymore, right?
I'm someone who makes a point of not turning on the lights unless absolutely necessary where I live (over saving electricity, mostly, but also just to prove I can), and I'm perfectly comfortable navigating my place in the pitch-black, even on the stairs, and have memorized the layout of where I live. I once was afraid of the dark when I was younger, but I can now feel totally comfortable relying upon touch and memory to navigate.
What if your adventurer could get used to the dark, and gain enough control over his/her emotions (willpower check?) to start making bogeymen no longer appear? It would give your characters some reasons to have non-physical attributes, as well.
It could also be a skill sort of like observer, where your character tells him/herself "I'm not afraid, that's just the shadow of a shrub. I'm not afraid, that's just a honey badger going into a rage at me for the 4329th time today." *The honey badger has been struck down* "I'm not afraid, that's just another werewolf, I've already killed dozens."
It just seems somewhat odd when your character is attacked by his/her own fears... and knows he/she has already killed dozens of them, so they can stand and fight if they fight smart.
Later edit:
After asking about this, Toady has said that bogeymen "may" be other-dimensional creatures more akin to Grues or Rumia.
The point would still stand, however, that while bogeymen are, to paraphrase words I saw Capntastic use once, "literally added just to instill the notion that night time is dangerous" should not be used to make vampires afraid of the night.
There are certain character types for which being active at night, even alone at night, make perfect sense. I am thinking most specifically of "cat burgler" type adventurers, as well as vampiric or other playable night creature types.
Even without it, powerful enough heroes that enjoy stealth will typically just mow down bogeymen for sport, and it makes less and less sense for bogeymen to be a reason to "fear the night".