Chapter five: Fluttershy.
Fluttershy was once a human who loved nature but when the explosion happened she was with some animals enjoying the nature…..But when the explosion happened she got a little mixed up with the animals but instead of becoming a mutated animal she became able to understand the animals.
The animals feeling abandoned by the humans if they went to the ponies world they flocked to Fluttershy as she could understand them though there are animals that also made friends with other ponies obviously.
The mutated animals don't really share this love for Fluttershy but because she can speak and understand animals Fluttershy can still make them submit if she really wants to as seen on the show.
Fluttershy feels different compared to the others and so she became shy to her own pony kind but braver around animals.
Even in her human form she actually really only had animal friends but she had two friends which happened to be Rainbow who she found she began to really like possibly more than a friend and Rarity who became like a sister to her.
Rainbow and Fluttershy would have become a possible couple had they been brave enough to admit their feelings even after they accepted they were at least bi sexual.
The scientist made her clone someone shy who loves animals and is good with animals.