my favorite character seems to die the second he becomes my favorite ;_;
well except for kenpachi just cause he's crazy xD but he doesn't get too much attention :<.
but other than that i liked grimmjow for a while and then ulqiorra.
put this in spoiler cause i don't know what part of the show you're on D: though i guess it doesnt' really spoil much
gin i liked because you just couldn't trust him. even from the time he first went with aizen to hueco mundo you knew he wanted to backstab him. and when he finally did it was great *_*. too bad aizen had freaking god mode on. i swear i've never wanted someone to die so badly just cause i was tired of seeing them pull that crap D:<
if we're going to talk about female characters seperately then tatsuki and yoruichi top my list definitely. unohana would probably be up there too if she got more attention :x.
the only reason why soifon isn't on there is cause her yoruichi worship was kinda annoying. i think one of the fillers pointed this out too.