This guy doesn't get enough attention, so I thought I'd write an essay on him.
I feel really bad for Krakulat. Even if he's a villain (and I still don't consider him one), the fact that he had to deal with the horrible, senseless death of a parent makes him quite possibly the most sympathetic one of the series. I personally wish Jacques had given him a bigger role and made him a discernibly grey character. I felt he had a tragic enough history to deserve it.
While violent, Krakulat only ever lashes out at the evil Sixclaw and his gang, yet this makes him villainous. I hate that this list: http://www.oocities.org/redwallhq/foes.html lists him and Bonebeak under the villains as well, for exactly the same reason---just because he is a crow. Yes, the things he does are wrong, but I find him far from unsympathetic, and his actions were towards a ferret who pretty much deserved it.
What do you think?