There's a certain type of sleeping enemy found later in the game which also appear ominously in one specific room early in the game (which that user ran into).
https://gfycat.com/EnchantingThickCaecilian
They are asleep and not collidable until such time that you wake them up by going near them while having a certain property/status.
that's throw away art by someone else that I never planned to use for anything FYI I didn't make it
Fair enough.
Have any promo art of your own that you intend to use?