I'm sure Grimmjow is still alive who knows he'll probably be the one to get them out of Hueco Mundo if Urahara doesn't show up and do it.
Signature by me.
Have we seen him turn into dust while the wind blows his ashes away as he figures out the true meaning behind his existence?
Then he's alive
Fighting online is like competing in the Special Olympics, even if you win you're still retarded
Set made by Ravona
And the last we saw of him he was alive, so right now there's no evidence that points to him being dead. Even though he had pretty bad injuries, that doesn't really mean a whole lot in Bleach .
If Nell went from kid-mode to her former self, doesn't that mean Dondo-Chaka and Pesche can change back too, it would only seem logical?