Not all twins share the same parents. Though I suppose one could argue that Walt Disney's children are legion.
Ursula & Medusa
If Ursula had legs and Medusa could join her crocs in the water, they could practically become a synchronized swim team.
- One wave memorable up-dos offset by dangly earrings
- Drag queen ready make-up
- Explicitly bra-less bouncing boobage and slovenly bodies
- Adores lounging about on seashell like thrones
- Terrible at feigning niceness to young girls
- ...but great at manipulating them into dangerous situations.
- Two reptilian henchmen (Flotsam & Jetsam / Brutus & Nero)
Lady Tremaine & Maleficent
- High cheekbones, arched eyebrows, altogether angular gorgon beauty
- Fond of the purple collar
- Really really fussy about Royal Events and who is and is not invited to such things
- Identical Twin voices courtesy of the same actress Eleanor Audley (pictured above)
Case #3... ??? Make it in the comments.