Octavian and Francine, Octavian looked creepy and I thought the polka dot thing Francine has on her head looked stupid.
I was surprised that Roscoe wasn't more popular, he's a cranky black horse and the whites of his eyes turn yellow when he's angry. He was my first dream villager before I even got the game. Also, Bella the peppy mouse with a skull shirt. The peppy goth thing she has going on makes me think of Abbey from NCIS.
Deer villagers also seem insanely popular for some reason, they're cute and all but they don't appeal to me as everyone else... So of course that means I have great luck with getting half the deer villagers in the game. I guess they'll be useful to trade for my actual dream villagers but it seems like every time one moves out another moves in. Fauna's leaving? Here's Bam! Bruce is going? I bet you'd like Fuchsia! Fuchsia wasn't even in my campsite, that was just dumb luck.