Hell Armored Bones

Type	Undead Enemy
Environment	Dungeon
AI Type	Fighter AI
Banner	Hell Armored Bones Banner(Desktop, Console, Mobile and 3DS versions)
Immune to
Debuff	On Fire!
Debuff tooltip	Slowly losing life
Chance	100%
Duration	10 seconds20 seconds25 seconds
Coins	10 SC25 SC
Hurt	https://terraria.wiki.gg/wiki/File:NPC_Hit_2.wav
Killed	https://terraria.wiki.gg/wiki/File:NPC_Killed_2.wav
Idle	https://terraria.wiki.gg/wiki/File:Zombie_0.wavhttps://terraria.wiki.gg/wiki/File:Zombie_1.wavhttps://terraria.wiki.gg/wiki/File:Zombie_2.wav

The Hell Armored Bones is a Hardmode, post-Plantera enemy that spawn in the Dungeon after Plantera is defeated. Similar to Angry Bones, they come in multiple varieties and follow the Fighter AI. Hell Armored Bones are visible in darkness but do not actually emit light, except for a faint glow when immersed in water. They also inflict the On Fire! debuff for 10 / 20 / 25 seconds.

Tiled walls

Faction flags
in this area:

Hell Armored Bones spawn most often in areas of the Dungeon backed by tiled walls. They can also spawn in other areas, but with a significantly reduced chance.

Variants

Classic

Expert

Master

2 values: Pre-Hardmode › Hardmode
3 values: Pre-Hardmode › Hardmode › Post-Plantera

NPC ID		Health	Damage	Defense	KB Resist
277	Hell Armored Bones	400/800/1200	70/140/210	32	60%/64%/68%
278	Spike Shield Hell Armored Bones	450/900/1350	65/130/195	48	70%/73%/76%
279	Mace Hell Armored Bones	500/1000/1500	40/80/120	54	80%/82%/84%
280	Sword Hell Armored Bones	500/1000/1500	75/150/225	34	60%/64%/68%

Notes

Despite being immune to the On Fire! and Hellfire(Desktop, Console and Mobile versions) debuffs, they still take damage from lava.
In Don't dig up(Desktop, Console and Mobile versions) and Get fixed boi(Desktop, Console and Mobile versions) worlds, Hell Armored Bones will drop the Katana instead of the Keybrand.
For the banner the kill counts of all variants are added up.

Trivia

The Bestiary entry for the Hell Armored Bones: "The fiery glow of the Molten Legion is unmistakable. With their red-hot armaments in hand, they blaze a trail through all those in their way."