if you're around the chapter 5 area... I'd take sedgy or Wolf into consideration... but you gotta be careful; they grow slowly. Barst is good as an axe-fighter or Swordsman.
H5 is Merciless and if your past chapter 3 your doing quite well.
hmmm... Samurai champloo is my favorite anime. It's very interesting if you have a special affinity for "Edo Period Japan".... its too awesome to describe
it's possible.... sounds like something one of the "mini-bosses" would say. like, "unleash Fear". hahah i guess it really depends on who's saying it. hope that helps!