The Hallowed Mimic is a miniboss that spawns rarely in the Underground Hallow. They can also be spawned by putting a Key of Light into any chest. The chest will then turn into a Hallowed Mimic.
- With 3500 health, they are a bigger, more offensive Mimic type enemy.
- It attacks by lunging or stomping on the player. Its stomp attack can travel through blocks.
- Though able to be summoned, it can be detected by the Lifeform Analyzer.
- They will occasionally close themselves, preventing all damage and reflecting most projectiles both magic and ranged in Expert Mode.
- A metal "clanking" sound is heard when they are damaged, much like the Possessed Armor.
- It is said to be the most useful Mimic in the game, dropping the famous and widely used Daedalus Stormbow, which is used in fighting some hardmode bosses, most notably The Destroyer.
- Added to the game.