No.
Kenpachi has always wanted to fight byakuya. the first time they fight is when everyone thinks that Byakuya has turned on th shinigami and sided with the zanpakto instead and Kenpachi comes to fight Byakuya because everyone else is fighting zanpaktou. (anime: Zanpakto Alternate tale) the second time Kenpachi and Byakuya fight over who's going to kill/fight 10th espada Yammy. (anime: Fall of the Arrancar)
It is Engetsu
Kenpachi doesn't have a name for his zanpakuto. Therefore meaning he does not have a shikai. Cheers
zanpaktou
he named it after the spirit that lives inside of it: Zangetsu
Yes he is, and he claims that he killed his owner... ... muramasa is koga kuchiki's zanpaktou
Kenpachi Zaraki
Ichigo zurosaki!!
Kenpachi Zaraki .
Unless he's learnt his Zanpakuto's name, no.
He defeated th previous 11th squad captain, the squad captain's name was never revealed. Maki and Kenpachi talk about it in the Bounto Arc.
no.my mistake yes they are real just connect your sword with your spirit energy which is your soul and if you master your sword very well you will have zanpaktou