My friend and I (who by the way is HanakoMikazuki on theO) were listing our favorite characters on Bleach a few days ago. We had a whole lot of fun and spent quite some time on it, so here is my current list. Go to Hanako's world if you want to see hers.
Warning- May contain spoilers
Link- http://www.theotaku.com/worlds/hanakomikazuki
1-Izuru Kira
Yeah, I actually don't know why he's my favorite character, but I guess its because he's so awesome in the New Captain Shusuke Amagai Arc!
2-Toshiro Hitsugaya
The short (sorry shiro-chan) 10th Division Captain is my 2nd favorite! I think in the anime, he has the funniest moments. Getting mistaken for a child, yelling at Rangiku, his lazy lieutenant, and getting teased about being the boyfriend of Karin! He tries to act like an adult, but he really is like a child. That's what I like about him.
3-Rangiku Matsumoto
And Rangiku, Toshiro's lazy lieutenant, comes right after her Captain! Rangiku always seems to have a split personality to me. Striving to annoy her Captain, drinking sake and avoiding the dreaded paperwork is how she spends her days at the 10th Division Barracks. But what I find fascinating is that when a battle comes along, Rangiku becomes serious and determined. Striking down the enemy and protecting her Captain. She really does care for her Captain (even though she annoys him alot).
4-Luppi (Former 6th Espada)
The former 6th Espada, killed by Grimmjow. Grrr... I'm mad at him... I really liked Luppi even though you only see him for 1 episode. He always seems to be calm and collected and I find his resurrection form quite interesting.
5-Halibel (3rd Espada)
*sigh* And Halibel, like all the espada die. BUT I HATE HOW SHE DIES!!! CURSE YOU AIZEN FOR KILLING HER!!! Yeah, anyway it was Aizen that killed her. Her past life was quite intriguing and her fraccion are so awesome! Plus she's the only female in the 10 Espadas and that make me think good for her. Because usually females are considered weak. And being the 3rd Espada too!
6-Kisuke Urahara
Mr.Hat 'n' Clogs is next! Yup, that's what Ichigo calls him in the Dubbed version of Bleach. I like him because his personality is most interesting. Being able to joke around while battling is quite amusing. On first glance, he may seem like a weak guy, but he really is a good fighter. He wasn't the 3rd seat of Squad 2 for nothing!
7-Hanataro Yamada
I find Hanataro cute! 7th seat of the 4th division, Hanataro is an interesting guy. He is jumpy and nervous around those with higher rank, but his Zanpakuto is quite powerful. Although the shikai is quite amusing. A little knife thing! It's so funny how when he gets intimidated, Hanataro bows down and immediately starts apologizing! It cracks me up when he does that!
8-Sajin Komamura
Hanako and I call him the doggie. At first glance I actually thought he was a fox, but I then figured out he is a dog. I'm not entirely sure why I like him so much, but I figure hes JUST AWESOME.
9-Grimmjow (6th Espada)
Yes, the Grimmjow that killed Luppi is my 10th favorite. Why you ask? Because I find his personality quite interesting. And yes, I'm repeating that over and over for alot of characters already, but it's true. I dunno, but it seems I like his savage personality. Like Demon Inuyasha I guess. KILL.
10-Shunsui Kyoraku
Like Rangiku, he loves drinking sake and slacking off. His lieutenant Nanao has to keep him in check. I like how he can stay laid back and relaxed even in the middle of a battle. I find his games while fighting is interesting and fun to watch. Fun to play too...
11-Mayuri Kurotsuchi
I used to think of him as creepy and insane(sorta), but now I actually like him. Funny huh? There are some aspects to him that I don't like, like how badly he treats Nemu, but I still like him. I find it funny when he wants something as a specimen and everyone's looking at him like O.o. His Zanpakuto is quite unique and I find it quite interesting. OMG, I sound like Mayuri! (XD) Anyway, I find that he is an interesting character in the anime.
12-Retsu Unohana
Yes, I like the creepy healer of the 4th division that can be scarier than Kenpachi. In fact, that is why I like her.
13-Ulquiorra (4th Espada)
The 4th Espada who I find quite interesting(Mayuri^.^). The Espada who is always calm and looks as if he is constantly sad. The reason I like him is because of his resurrection forms. And I say forms because he has 2. I also find the instant regeneration quite fascinating(Mayuri^.^)
14-Ichigo Kurosaki
And no, I don't like him because he's the MAIN CHARACTER, but he always seems so hard headed and gullible. But the most amazing part is that he becomes serious and determined when it comed to protecting the ones he love. (and if you're thinking about boyfriend/girlfriend relationships, I'm not referring to that. I think it's more like family relationships) I love his shouting sessions with his friends too! It's absolutely hilarious!
15-Nelliel Tu Odelschwanck (Former 3rd Espada)
And yes, I remember her full name, I did not search it up. Its so fun to say too... Anyway, I really like her mini self, she was so CUTE! I also like her real self, she is so calm and collected and her fighting is amazing. I hate Nnoitora for throwing her out of Las Noches.
So there you have it, my Top 15 Favorite Bleach Characters. Hanako and I are currently working on a Favorite Zanpakuto List, so that will be up sometime around.