Mimic

Mimics are enemies in the Castlevania series. They assume the guise of treasure chests to lure in unsuspecting victims.

Origins
Mimic

Description
Mimics look identical to common treasure chests found in many games through the Castlevania series. They remain stationary, luring any adventurer who is in search of treasure. When approached, they reveal to be monsters with big mouths full of fangs and usually start jumping at the hero. Other types wait until they are opened before becoming hostile.

Castlevania: Aria of Sorrow
First appearance of Mimics in the series, featuring a rather unique portrayal of them. Instead of looking as treasure chests, they assume the form of big, blue $500 bags.

The first one is encountered in the farthest room of the Forbidden Area. This secluded cavern is used as a treasury of sorts to hide all the riches the Count has accumulated throughout his immortal life. A suspiciously-looking blue gold bag can be found lying at the center of the room, with the Joyeuse visible on a higher ledge just awaiting to be picked up. Among the riches that can be seen in the background, only a big, golden skull warns the visitor of any danger. Hitting the bag will make it drop its deceit and reveal its true form: a giant, demonic skull.

Another Mimic is encountered much later in the game, in the Chaotic Realm. It is encountered in a suspicious lonely room that only features a candle at its center. Destroying the candle will make it drop what would appear to be another big, blue gold bag. Hitting it again will make it drop its guise and once again reveal its monstrous nature.

Gaining dominance over the Mimic's soul grants Soma the Cash Back ability, which will make him produce money every time he takes damage.