User blog comment:Jambellyfatboi/Just a few questions./@comment-1429792-20110827135203

Nel and Grimmjow have not been shown or mentioned in a very long time, so we still don't know what became of them. As for Ulquiorra, he succumbed to his injuries and his body disintegrated. He stated that his regeneration could not replace his internal organs - so he was doomed from the moment the cero ripped through him. As for Yamamoto (and every other yet to be revealed Bankai), only Tite Kubo knows when or even if he will ever show them. But there is plenty of life left in the series, so there is no reason to think that it wont be at some stage