User blog:Kmb11k/Song

Does anybody know the song that plays in episode 509 when Zoro walks in the room with Mihawk and Perona at the 2:08 mark? This same song plays when Zoro is getting ready to fight Ryumma on Thriller Bark, as well as some other places, including at some point in Impel Down. I've been trying to find this song everywhere, but no luck. Help anyone? Thanks!