Blood Crawler

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Blood Crawler
Blood Crawler (ground).gifOld-gen console version and Nintendo 3DS version
Blood Crawler.gif
On wall
Classic mode icon.png Classic
Expert mode icon.png Expert
Master mode icon.png Master
AI TypeFighter AI (ground)
Spider AI (on wall)
Max Life60/120132/180198
KB Resist50%/55%/60%
BannerBlood Crawler BannerBlood Crawler Banner
Immune toPoisoned
Coins1 SC30 CCPre-Hardmode: 3 SC25 CCHardmode: 2 SC60 CC
  • Internal NPC ID: 239 (ground), 240 (on wall)
Blood Crawler displayed on the Official Terraria Forums (Crimson style).

The Blood Crawler is an enemy commonly found in the Crimson. In addition to walking, it can crawl on background walls.


  • Blood Crawlers spawn six times more often on tiles that are in front of background walls,[1] hence they are more likely to be encountered in the chasms of the Crimson than on the surface.
  • Like all spiders, Blood Crawlers cannot travel through a vertical 2-tile wide shaft.


  • Blood Crawlers differ significantly from real-life spiders:
    • They are able to drop Vertebrae, despite real spiders being invertebrates.
    • They seem to have two eyes, but real spiders have eight eyes.
      • On the Official Terraria Forums artwork seen below, however, they appear to have two large eyes (seen on the in-game sprite) and six small ones, which complete the eight eyes.
  • The Blood Crawler may be based on ticks, tiny parasitic arachnids who live off of the blood of other larger animals, including humans.
  • Like the Face Monster, it lacks a direct Corruption variant.
  • The BestiaryBestiary entry for the Blood Crawler: "Most spiders operate independently, but ones touched by the Crimson hive coordinate together to consume life."
  • Despite this statement, such a particularly coordinated behavior is not present in the AI of Blood Crawlers, in comparison to that of the other spiders.


  • Desktop Fixed an issue where wall-crawling Blood Crawlers had an off center hitbox.


  1. Information taken from the Desktop version Desktop source code, method SpawnNPC() in Terraria.NPC.cs.