Basically any villager that picks fights. And for me right now, that villager is Renee
. It really sucks, because, when I finally got her in my town, she didn't have her original shirt either (which is a huge part of her appeal). Its really weird though, because I have Fuchsia in my town too, and she never seems to get into any fights. Its led me to believe that within certain personality types there are subsets of it as well.