Crawlers

Crawlers are small, black entities that appear to be on all fours. They float in the air, despite appearing to be crawling.

In-Game
Crawlers are pure black entities that stay in place. Because of their color, they are impossible to see in the dark until you get close, which can startle you. Crawlers cannot kill you, or even coerce you into getting caught by another entity as they cannot spawn past floor 60.

Tips

 * Crawlers are harmless and do not need any tactics to avoid them.
 * Crawlers disappear after passing through them, which can lead to confusion when you turn around to see what it was. It is a common misconception that these appearances are just glitches, but these are actually intentional.