Treasure Pest is an enemy from the game Wario: Master of Disguise. It’s name is a pun of treasure chest.
Profile
It disguises itself as a normal treasure chest but when Wario approaches it, it will reveal its big eye and attack Wario.
In-game description
"A devious mechanical trap made to look like a treasure chest. It yearns to put a hurtin' on all who draw near to steal the sweetness within."