Demons. All four of 'em. :p
Ditto. Not sure if because we're on a Castlevania forum while viewing them, but they all distinctly look like monsters or demons.
1 - Some kinda creepy ass skull demon with shit around it.
2 - I dunno what the fuck that is, but it has eyes and its creepy, and some kinda dumb crown on it's head.
3 - Creepy ass snake like demon thing.
4 - Some kinda demonic raven or bird. There are the big eyebrow like eye things going on, and between them looks like a beak.
Creepy shit all around.