Trivia #22 - Yoruichi is the only ex-captain level shinigami in the anime who's zanpaktou has not been shown at all
... Since she was commander of the militia ops you can be sure that she's achieved both shikai and bankai
. However, she much prefers to use hand to hand combat techniques, because she's blazingly fast and she spruces her punches with reiatsu so given a choice really want to stay well away from those fists ^_^
I'd love to know what her zanpaktou is and what it's abilities are though
*sigh!*