The obvious answer is Magneto, so that's boring so I am going to say the Malificent. What kind of monster invites all but one sister? Just don't invite any of them. Or just one. Don't lie, you'd do the same! Only Disney villain that didn't need to be expanded on.
Maleficent and Diablo: Classic Disney AnimationAlt: Maleficent and Diablo: Classic Disney Animationstatic.klipy.comSophia_Nyx 🏳️⚧️Name a villain who was actually right.