Well there's nothing that says he can't. He just doesn't as he doesn't believe that Zanpaktos have souls and that they are just mere swords.
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)
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.
Ichigo zurosaki!!
Rukia is primarily a kido user with a backing of kenjutsu, or sword techniques. Her zanpakto is a kido type as well. Despite being a sword, her zanpakto's primary abilities are kido. Her zanpakto is considered to be the most beautiful zanpakto and it is the second most powerful ice based one.
Kenpachi doesn't have a name for his zanpakuto. Therefore meaning he does not have a shikai. Cheers
This would be episode 52-53 I believe and it is Kenpachi vs Tousen and Kamamura. These episodes also contain Ichigo training for Bankai :)
No.
"It" is a girl. Her name is Yachiru Kusajishi. Just for those people who don't know, she's only good enough to be a lieutenant because shes very old (you don't age in the soul society). Also, it's rumored that she is related to his zanpakto somehow (maybe his bankai?) it is plausible also watch the bloody anime or even read the manga and you will find out
Kenpachi Kiganjō was the 10th Kenpachi (Kenpachi Zaraki became the 11th) though I am not certain the exact date when this transfer of power happened. Prior to becoming the 10th Kenpachi and head of the 11th Division, Kiganjo was known as "Gosuke Kiganjō". He killed the 9th Kenpachi and 11th Division head 110 years prior to the start of the story, so Zaraki's ascension to power happened sometime after that point.
you cant talk on crossfire
Nemu has not been seen with a zanpakto in either the anime or the manga. However, an artbook titled "All Color But the Black" shows her with a katana. It is unknown where she keeps it, but considering the fact that she is an artificial being, she could be concealing it anyone on or inside her body.
You cant talk on pet party