Armored Skeleton

The Armored Skeleton is a Hardmode enemy which can be found in the Caverns. It has a chance to inflict the Broken Armor debuff for 2 minutes /  on contact.

Trivia

 * Armored Skeletons appear to be wearing a bluer variation of the Ancient Cobalt Breastplate with spiked shoulder guards.
 * The Heavy Skeleton variant is one of the few enemies whose health does not increase in Expert or Master Mode. Because of this, their health is actually considerably lower than the regular armored skeleton in the latter, and comparable in the former.

History
Gepanzertes Skelett Squelette en armure 装甲骷髅