(I only played Awakening/Fates/Heroes)
There seems to be a lot of people who dislike Corrin... I honestly don't have anything against Corrin. I didn't expect MUs to be so distinctive from the beginning. The creators could do better, but after Robin, I didn't think much of the MUs.
but then there's Camilla, of course. I generally like most Fire Emblem characters I saw so far, but her personality and armor just... disturbs me.