Out of the Mane 6, Fluttershy. I never understood why she's such a fan favorite. We get it, she's shy and nice. It seems like she only conquers her fears for one episode but then completely reverts to her old self in the next one. In the few seasons I've watched so far there just seems to be no arc with her whatsoever. But then I guess she wouldn't be "cute" anymore lol. I guess I just don't care for her archetype.