Board Thread:General Discussion/@comment-11003280-20130620163542/@comment-11051098-20130703145346

Wonderweiss was basically only speed, stamina and excessive power. I guess he did have a great durability too, seeing as he apparently held his own against Kensei for quite a while before he released his Resurrectíon and appeared behind Yamamoto.

Back to the title, I still hope Unohana is alive, but the chance seem to be very small. But at elast Kenpachi has regained his full power and is now able to communicate with his Zanpakutô, and if he should also achieve Bankai before this arc is over, he would probably be able to fight for both of them.

Given his nature, I imagine his Bankai to be a giant butcher ax, something similar to Hiyori's Shikai.