Alastor Glomgold, The Main antagonist of Peach: The Daisy's Theater, Satan form of Flintheart Glomgold and Mister of Satan.

His abilities: Shadow Possession (Summon Shadows and possess the victims into his minions), Pyroball (Summon Giant Balls of Pink Fire), Brutal Flair, and Demonic Magic.

He was a Demon Duck who took over Daisy's Theater with the help of Doom Monsters and Possessed victims to into Satan Theater.

After Flintheart Glomgold goes into an arguing fight with Le Quack and successfully takes the Satan Diamond, he starts making the Curse of Daisy's Theater by taking over the theater, kidnapping Le Quack, and stealing Peach's Crown.

His evil quest is Executing Le Quack in exchange for cutting the organs and stealing blood to make the Legendary soul.

He appears in Peach: The Daisy's Theater as the Main Antagonist role but returns in MIWBTI 4 during the hunt down the Six Heroes before he gets defeated by becoming Flintheart Glomgold and Receives the Pride Key.

Alastor Glomgold, Peach: The Daisy's Theater (C) me
Flintheart Glomgold, Ducktales (C) Disney