What if Twilight Sparkle was Bad (evil)

[Babyyoshi309 1,829]

Nightmare Twilight! Get on it writers!!! 

[Ganondox 899]

That would be bad, very bad. 

[Goat-kun 2,527]

Skipping the irrelevant story of her nightmarefication, Twilight befriending her own nightmare after a 1v1 in her dreamscape would be the most splendid shounen shit ever. A worthy GoH toy line princess power up indeed.

[SDP40F amtrak 2,447]

😈😈 laughter evily oh I see happen when I turn evil

[Kadeda 178]

If Twilight turned evil, Equestria would have a huge problem. For one... when someone turns evil... their IQ Quadruples for some reason and they are far more powerful. Think Starlight on steroids or mini Daybreaker. I really don't think anyone short of Celestia could stop her. They would need Twilight to defeat Twilight.

It could be a cool finale though. Either her or Celestia needs to go evil for a few days b4 the show is over.

[Rhythm Red 6,484]

Twilight Sparkle is proven to be powerful, but the effect she would have on the world is likely determined by what she actually tries to do. Will she go full-on Starlight and try to brainwash ponies? Will she find the alicorn amulet and take over Equestria with sheer magical power? 

Though I doubt she’d go evil in the first place. The only way I could see that happening is if she got the alicorn amulet.