Colton and Marshal are definitely my least favourites, but I voted for Marshal. I really hate him.
I feel like I could like Colton, but after he moved in right next to my house on top of my only, ungrown perfect orange tree... I kind of want him to get out of my face.
I would say Marshal as well, because I agree that he is bland, overrated, and I dislike his design. That said, knowing this forum, he won't get the most votes. So I voted for Poppy. She's the second most bland in my opinion.
I voted for overrated Marshal. I spent ages trying to get him, got him and a week later moved him out. I think he would have been better suited as a cranky or a lazy. His smug personality just doesn't work for me.
I voted Merengue because I don't like having too many of one villager type. Her design is cute but after having her in my town for a little I just didn't click with her.