In an attempt by Cinch to smear magic and cause the Rainbooms discomfort, she teams up with Quantum Leap to create clones of the Rainbooms charged with corrupted magic. The problem was that she could only create four clones that came out with bugs; Even so, the villains Midnight Sparkle, Sunset Satan, Nightmare Rarity and Gaia Everfree have the powers; creating The Moirai.
 
Hela: Clone of Midnight Sparkle . Created from Sci-Twilight’s DNA. She is the team leader and the most powerful. He specializes more than anything in creating portals and manipulating corrupted magic. her gloves conceal a surgery on her arms due to a correction that had to be made with titanium plates, in addition to having astigmatism.
 
Hestia: Clone from Sunset Satan. Created from Sunset Shimmer’s DNA. She is the second in command and the wildest. Its infernal flames are highly dangerous. Damage to his left shoulder required surgery for correction.
 
Nemesis: Clone of Nightmare Rarity. Created from Rarity’s DNA. The most elusive of the bunch; due to her ability to turn into smoke and manipulate shadows. Evidently her left leg did not develop and her replacement was a poor quality prosthetic leg.
 
Gaia: Clone of Gaia Everfree. Created (for some reason) from Fluttershy’s DNA. The only one who holds the group together because of her kindness. Its power is to dominate the flora and use spores with its flowers. She is actually mute, so her necklace is the only way she can speak
 
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In the first encounter of the Moirai with the Rainbooms, Nemesis’s prosthetic leg breaks and Rarity, out of her generosity, creates a leg with her crystals.