Spoiled Rotten is the first boss from Wario Land 4, fought after completing the first level. It resembles a giant purple anthropomorphic eggplant with childlike traits (such as carrying a doll).
At the beginning of the fight it is assisted by two smaller eggplant creatures and at first simply walks around harmlessly, making it easy to hurt. However, after taking a certain amount of damage Spoiled Rotten transforms into a terrifying, demonic monster with sharp fangs and grotesquely distorted features. When defeated Spoiled Rotten explodes into a shower of smaller egg plants, and can never be re-fought unless starting a new game.