There's always a maniac going around.
That been said, i kinda like Garm. It doesn't feel like a new characters in terms of his attitude, but i like his ability with the spear and his very funny.
Thorkell is the best, his reaction (to what happened on this volume) was expected but priceless. I can't wait to see what happens next, this could be a problem for a lot of people.
Floki, as always, very hateable. I mean, he makes it easy, but he's a really good "villain".