Olaf, Rasher, Diva, Marcel and Chadder are a few villagers that come to mind. There are a lot of 'ugly' villagers that I love, more so than the cuter ones, but these are usually the five that I think of when somebody tells me who's my favourite 'ugly' villager.
Zebilage- shari <3 she my favorite monkey
Lovely- clay he has an awesome design
(These town are no created yet but will soon be)
Purely- I think it will be violet because not much love for gorilla
Rstoulle- I think moose because a lot of people don't like him
Almost all of my favorites are considered "ugly" by people so I guess all of them. lol
My top villagers are Rocco, Rocket, Bubbles, Violet, Alli, and Wart Jr. (mostly all of the gorillas and hippos are my favorites too)
Mostly all of them, since I prefer the more unique and colorful designs.
Right now my favorite ugly villager is Naomi, cuz she's my favorite in the town I've been playing on, but I do adore others esp ones in my towns.
Ugly villagers that I'm hoping to someday get into my towns are Diva, Frank, Tex, and Benedict. This type of thread keeps popping up and I keep posting out of boredom
Hazel, Deirdre, and Katt are my favorite. Katt was always so tough and cool, and Deirdre's like a big sister. I haven't had experience with Hazel but she seems pretty cool to me.