From 5x13: Do Princesses Dream of Magic Sheep? Fluttershy temporarily becomes the Flutterbat again.

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It was nice to see again, even if it was only a dream.

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Indeed it was.

The fun things about dreams are that we can look into the persons/pony's sub conscious. Why did she change into flutterbat of all things? What drove her to release that monster?

4542335 I knew that Flutterbat would return

4544070 That is because deep down FLuttershy is still Flutterbat. She will become Flutterbat again for real in the future

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Especially because Dashie and AJ turned into their Power Ponies personas. Maybe the Flutterbat, being an animal, was closer to an ideal for her than the Saddle Rager?

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Or that, perhaps. Would be interesting.

4544734 Remember Fluttershy did still have her fangs at the end of the Bats episode

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It took them four seasons to bring back Flutterguy, though.

4544740 I guess that the MLP FIM writers love Flutterbat more than Flutterguy

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Who doesn't?

4544751 Flutterbat is really awesome. Now I wonder if Fluttercruel from Putting Your Hoof Down and Flutterhulk are coming back too

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I hope not. If they do bring her angry-side back ever, I hope it's handled a bit better.

4544768 Or imagine Fluttershy be both Flutterbat and Fluttercruel at the same time

4544734 I would say that Flutterbat is one of the most powerful forms of fluttershy besides her protective and caring form. I mean come on. She basically had to trap herself because nopony else could stop her. Flutterbat also gets rid of a few very key feelings such as fear so she would be able to do more than what timid normal fluttershy would do.

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Good theory. Might be fun to come up with a story idea based on this.

4545406 Someone make it happen