Yachiru is definitely one of the coolest. her and Zaraki are a perfect match! Mayuri seems interesting. it seems like he is one who does his homework before really attacking somebody, trying to find out as much as possible about his enemy. Nemu is cool, with her ability to talk to butterflies (or at least I think...I dun read the manga, so yea). Ishida was awesome, with his sudden no-shit attitude and power towards shinigami. can't wait so see some more battles