Board Thread:Questions and Answers/@comment-5693502-20140410203934/@comment-5693502-20140413091825

Okay I get that, since Shinigami are just Souls that can utilize their spiritual power. But one of the perks of being a Shinigami is having a zanpakutō (the thing the good ol' Arrancar's receive).

But then there's another thing I'm not getting. Hollows must be Souls (by definition), otherwise there would be nothing wrong with all the Quincy killing them off. The normal pure Souls are called Pluses and the Pluses that don't make it to Soul Society turn into Hollows, which are more-or-less corrupted Souls (which in my book is still a Soul). Something to add is that a conglomeration of many Hollows is called a Menos or Minus (giving us Pluses and Minuses, good Souls and bad Souls if you will). And how do you turn bad Souls back into good Souls ? Purify them with a zanpakutō. Which could mean that the higher up the Menos ladder we go, the more 'corrupt' the Minus gets. I digress...

So if being a Soul is what allows someone to use kidō, then an Arrancar (a very bad corrupted Soul, with generally increased intelligence) should be even more likely to have the potential to use kidō.