Beldam

Beldam is the leader of the three Shadow Sirens which consist of herself and her sisters Marilyn and Vivian (who was later replaced with Doopliss). Beldam is a demon who is more than 1000 years old and adept at magic; she also has a pretty bad personality. She constantly mouths off about how pretty she is and she is always telling Vivian she's ugly and useless. Beldam and the Shadow Sirens worked with Grodus to find the Crystal Stars and open the Thousand-Year Door pretending to be nothing more than hired help. However, Beldam secretly planned to betray Grodus and defect to the Shadow Queen, the ancient demon sealed behind the Thousand-Year Door. Beldam was the one who kidnapped Princess Peach and the one who spread the rumors that there was a great treasure behind the Thousand-Year Door. Beldam and the Shadow Sirens appeared throughout Mario's adventure trying to slow Mario down.

Beldam eventually revealed her plans to aid the Shadow Queen in conquering the world when Grodus unleashed the demon. Beldam took all the credit for releasing her. When Mario defeated the Shadow Queen. Beldam suddenly turned nice and now lives in Twilight Town with her sisters.

Stats
Tattle Number: 121

Boggly Woods Battle

 * Stats: HP 9, Attack 1, Defense 0
 * Locations: Boggly Woods
 * Tattle: That's Beldam. She's the oldest sister, the leader of the Shadow Sirens. She can make her partners big and make us tiny, and attacks with weird magic. The worst thing about her is that sinister snicker. She sounds so totally evil! I mean, she's just the sort of person you want to avoid like the plague, y'know?
 * Tattle Log: The eldest sister and leader of the Shadow Sirens, she uses magic to attack. Her personality stinks.

Palace of Shadow Battle

 * Stats: HP 30, Attack 5, Defense 0
 * Locations: Palace of Shadow
 * Tattle: That's Beldam. She's the leader of the Shadow Sirens. Her special move is a blizzard blast. If it hits you, you'll totally freeze. She has lots of other tricks up her sleeves, too. I wonder what that plan was that she mentioned? What do you think they're up to?
 * Tattle Log: Leader of the three Shadow Sirens. She'll throw all sorts of magic at you and has a very unpleasant disposition.