Blood Crawler is a spider-like Pre-Hardmode enemy that spawns in the Crimson. It has the ability to climb background walls and can also walk on the terrain like normal enemies. They don't have a Corruption Counterpart.
- They are immune to the Poisoned and Venom debuffs.
- They cannot be knocked back when crawling walls.
- They follow the Spider AI.
- Piercing Weapons are very useful when fighting Blood Crawlers.