So this one large Bleach filler arc interests me quite a bit. The bad guys are very interesting, because they introduce people with the ability to control a seperate entity that is still attached to their soul. Each and every person has a different, unique ability, too! There's a person who has a fire-based entity, a person with a water based entity, and so on! The bad guys are all quite unique, too. Especially the leader of them all- The cold, calculating, mischevious bad guy who is bent on domination. He even gladly uses his pawns to get what he wants, and almost succeeds, until the hero of the story finally puts an end to the bad guy by unlocking his hidden potential he knew he had the whole time yet never used.