Possessed Armor

Possessed Armor is a hostile purple humanoid, it spawns in caves and at night and can open doors during a Blood Moon. They begin spawning after you defeat the Wall of Flesh. It has 260 hp and 55 attack. They also have a good resistance to knockback, and their defense is very high.

Even though they strongly resemble armored mannequins, there is no relation between them. The armor these monsters appear in is not obtainable in the game at this time.

It is possible to kill it in many ways. You could treat it as an upgraded version of a zombie, as it has the same kind of movement. Guns work if you have a good weapon like Phoenix Blaster or any of the repeaters. Spears also seem to work pretty well against these.

Unlike most mobs, the debuff "On Fire!" will not work on Possessed Armor.

It also appears to leave a motion blur like the Shadow Armor set behind it while it moves.