I'd have to say rarity.

Who chose Pinkie? Why would someone hate her?

^People think she's dumb and the moments in season 4 really putted a bad record on her.

I love all of them but her character needs some more development or she is going to stay in the bottom. I don't like her learning the same lesson I know it's realistic but they miss the main point everyone hates real life want to admit it or not. And bringing us back into there isn't needed in a cartoon and we need more flaws or else we will get bored of her very fast.

I love them all, but I'd have to say that Fluttershy is my least favorite. She's kind of boring and doesn't do a whole lot, but I still like her.

...just because of Bats. Sorry, but I don't horribly dislike any of them, anyway. They're all great in different ways.

Not that I hate her...she just happens to be my least-fav.

Why do u hate pinkie pie?

OMG WHATS WRONG WITH PINKIE PIE PPL?

I began to like Applejack more in season 4.

It used to be RD, buuuuut... I kinda sorta hate Rarity. AND I LOVE PINKIE!!!!!

Rarity is an INCREDIBLE character. Fluttershy just... Is getting boring for me. She goes through seemingly the same things each of her own episodes. Pinkie's #4 just because I like Twilight, Rainbow Dash, and Rarity better.

Im sad now for the ppl who pick me

OH PLEASE

^^Sorry Fluttershy but I just need to see some more flaws and development out of you than you'll get higher but I still love your character.

^^^^I can tell you why she's one of the most hated characters of the main cast it is because her element is the opposite of her flaws. And they force it in your face. That's why she is the most hated main six.

OMG...Srsly Bronies?! I THought Everyone LOVES Fluttershy! :O (Not That I LOVE Her But..Wow..)

I LOVE PINKIE PIE!!!!!!!!!!!!!!!!

I HATE PINKIE AND RAINBOW DASH! CAN'T THEY SUFFER?!

Only because Applejack is boring. And I LOVE Fluttershy!!

HOW CAN PPL NOT LOVE FLUTTERSHY OMG!!!