Ichigo zurosaki!!
In Bleach it never shows Yachiru fighting. It's just one of the mysteries of Bleach, Although since her captain is Kenpachi Zaraki I'm guessing she is Pretty powerful or she would not be a lieutenant and exspecially not Captain Zaraki's lieutenant. Hopefully that helped! :)
Kenpachi doesn't have a name for his zanpakuto. Therefore meaning he does not have a shikai. Cheers
No.
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.
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)
Kenpachi Zaraki
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.
Kenpachi Zaraki is a popular character in the anime series Bleach. He first appeared in Bleach in Chapter 65, episode 20 and was created by Tite Kubo.
Kenpachi Zaraki .
Most likely Kenpachi Zaraki will be in the next ark of Bleach. I see no reason for him not to be because he was in every other arc besdes the very first arc.
the captain for the eleventh squad is Kenpachi Zaraki