Black/death metal, Cold/dark/synth wave, the abstract concept of villainy and evil rather then the actual manifestation of it,
cartoons, goth/punk fashion, H.P. Lovecraft and similar fiction,
'dad' jokes/ absurd non-sequiturs/ dark humor, making things for false realities,
and playing around with gender/species/various other traits of identity in fantasy.
Bio
I find this stuff funny http://www.smbc-comics.com/