Aizen's Bankai has not been seen in the manga or anime as of yet. He probably won't use it because he has the power of the Hogyoku on his side. If he ever does, it'll be when he fights Ichigo in the real Karakura Town.
It's Koca Swegetszu
manipulate the other people's 5 senses
Shikai: Hyorinmaru Bankai: Daiguren Hyorinmaru
Hinamori hasn't achieved bankai yet, just shikai.
Ichigo is the only soul reaper with a compressed bankai.
Up+X activates the Bankai it depends if you SR bar is at 0%.
Its the same as his normal bankai, Tensa Zangetsu, its just after his training in the Dangai.
Gin and Tousen
You need level 4 Soukatsui for Bankai, my sword is the best, its called bailing, epic bankai.
Although some Shinigami posses different stages of bankai, there is no level higher than bankai.
Shikai: Hyorinmaru Bankai: Daiguren Hyorinmaru
Ukitake's Bankai hasn't been revealed yet, only his shikai has.
he does he says "shoot to kill, shinso" and it literally shoots to kill. i don't know if that is his bankai or if his bankai is when his sword turns to dust. The sword pieces have poison in them, so they kill the opponent...i dunno which one is the actual bankai, but i hope it helped :)
NO
The word bankai is japanese. it means full release in english
his bankai is called Raika Goen Kaku which means lightning flashflame shell.
Hinamori hasn't achieved bankai yet, just shikai.
Answer:"dance sode no shirayuki is her shikai." It has not yet revieled that she has a bankai.
Ichigo is the only soul reaper with a compressed bankai.