"Ger" means "stranger".
I met many Ger Chassidim. I don't find them strange at all. OK, they wear spodeks instead of shtreimlach. So what? That doesn't make them "strange". I sometimes wear a Washington Senators baseball cap when davening. I think that's strange. (OK, I admit that I do strange things - is that strange?)
So what makes this group of Chassidim strange or stranger than any other Chassid or any other Jew for that matter?