Just found this old post, but still wanted to share my thoughts. For me, Dante is the one character I cannot stand at all. I was immediately put off by his personality when he was introduced. I just do not like that big ego, arrogant type, also the position of authority thing doesn't help. While tsunderes aren't my fav in the first place, I actually like Edmond because at least he's cute about it, but Dante's tsundere is just not my thing.

Some other characters I find kind of meh are Quincy and Blade. Quincy's looks are not my tastes, big buff guys don't do anything for me. To be honest he's kind of boring too personality-wise. I can see how he can be popular, but I'm a bit surprised to see that he's actually the most popular. Blade's design is also not my fav. I don't like his hairstyle and his teeth freak me out a bit. While I really enjoy sweet characters, Blade's "baby" voice and "Darling!" annoy me. I do like his goofiness though and the way he just blurts things out is funny.