Looks like a lot of fun to play if you ask me. That kick to the nuts looks great, so does his Shake Rattle & Roll. I'm please with his addition to the game, especially since he's free and all. I probably would have bought him nonetheless, but free is always better.
This DLC better be free for us Europeans as well, or I'll be seriously miffed. It does say that it will be free for ALL PS3 and 360 users, so I expect it to be just that.