|First appearance||Luigi's Mansion|
|Effective weapon(s)||Poltergust 3000|
Miss Petunia is a very obese former model found bathing. Her silhouette implies a very thin, voluptuous woman, but when Luigi draws open the shower curtain, it reveals a woman with very pig-like features, who promptly scolds the plumber by throwing scalding hot water at him. Luigi retaliates by firing ice at her, freezing her and exposing her heart, allowing him to vacuum her up.