Mimic

s are enemies that are found in the Bank. At 1+ BSC, they have a chance of appearing in any other biome with a shop.

The Mimic is guaranteed to spawn in the Bank. Its presence outside of the Bank is given away by a lore room that will also spawn in the same biome. Behind a hidden tunnel, a Guillain can be found, covered in blood and holding a sword. He is surrounded by ripped bags and will explain that a bag has escaped.

Behavior
Mimics disguise themselves as merchants in a shop. The merchant will act normal until the player buys from the shop. When the player confirms a purchase, the Mimic breaks its disguise, consumes the purchased item, and attacks the player. The other two items in the shop will also disappear at this point, so no other purchases can be made even after the Mimic is killed. In the Bank, the shop ATM will still be available.

Once the Mimic is defeated, it will drop the item the player bought but it will be improved, depending on what was bought. If it was a food item, its quantity will be doubled. If it was a gear item, it will receive two additional gear levels.

Special moveset
The mimic also has a few special moves it can use depending on what kind of item was bought.

Strategy
Mimics have high hit points, speed, and a varied moveset that they deploy aggressively. However, they only need to be fought if you make a purchase from a shop.

Players can use the walls of the shop to their advantage with the Spider Rune.