User blog comment:Xilinoc/Ch. 617 - Return of the God/@comment-4207271-20150226143749/@comment-4207271-20150226224210

I already said about how Sui-Feng's family protects and serves the seemingly smaller Shihoin, but the main reason I thought of them as the legs is the simple fact; what do they all rely on? Speed. Running. Using their legs. As it was, Ukitake was essentially the Captain Commander's Right Hand (Shunsui and Yama), then there is the whole Yoruichi never uses her Zanpakuto because she doesn't need/want to, but is still that powerful? There has to be something to explain that sheer power, and being part of the SK would do it.

And to be honest, I didn't think of Rangiku and Gin, but she doesn't really suit the limb thing, she is still a mystery.