Whenever that hole in the floor isn't the home of a Bottomless Pit, it's the home of a monster. And when there's a lot of holes in the floor, you're probably in the company of this type of monster. Emphasis on fighting these guys is on speed, as you only have so long before they throw something at you and scurry back into hiding. Thankfully, if it isn't a boss these monsters die quickly. May overlap with Puzzle Boss. Non-boss forms can quickly cross into the realm of the Goddamned Bats. Variations include: