User blog comment:Silver-Haired Seireitou/Supernatural Creature Project/@comment-18812574-20140509044915/@comment-18812574-20140510052459

Bounts suck. Very funny. And remember the Demon Sword arc thing? Yeesh. Anyway.

Since Bleach was originally set in Japan, here's a giant list of creatures from there that could serve as inspiration for all ya'll: Japanese Creatures

Back on Jiangshi topic, the fact is that it would need some explanation to fit with established canon, as you said Z. What if there's a glitch where somehow, if a living human's soul is devoured by a Hollow, the body can be re-animated due to a residual trace of X that influences them. But perhaps that's too zombie-esque. Your idea of Purgatory sounded almost more like the Togabito to me. I would prefer them having a physical body, is all, as opposed to being just a sub-type of ghost.