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The Old One's Skeleton is an enemy which is spawned by the Dark Mage during the Old One's Army event.

The Old One's Skeleton requires 200 kills to be awarded with the corresponding banner, as opposed to the usual 50 kills.


Classic mode icon.png Classic
Expert mode icon.png Expert
Master mode icon.png Master
2 values: Pre-Hardmode › Hardmode
3 values: Pre-Hardmode › Hardmode › Post-Plantera
NPC ID Type Health Damage Defense KB Resist
566 Old One's Skeleton.png Old One's Skeleton(T1) 25/50110/63140 18/3664/5496 12/1224 70%/73%/76%
567 Old One's Skeleton.png Old One's Skeleton(T3) 480/960/1224 70/140/210 22 80%/82%/84%


  • Old One's Skeletons are rather fast compared to the other members of the Old One's Army. Combined with their low life, this makes targeting them an ideal tactic.
  • Unlike the Dark Mage that summoned it, the Old One's Skeletons are capable of entering an ethereal state to freely fly upwards and pass through tiles, if needed.
  • Like other members of the Old One's Army, the Old One's Skeletons are immune to Teleporters and Lava, and will take half damage from Traps.
  • Unlike most skeletal enemies, Old One's Skeletons can do damage to the Skeleton Merchant.


  • The BestiaryBestiary entry for the Old One's Skeleton: "Small armies of these skeletons are summoned from the ground by Dark Mages, loyally serving their master's will."