Board Thread:General Discussion/@comment-24159286-20131112052402/@comment-1387259-20131120204055

BoschePG wrote: Im not saying Grimmjow is going to be part of the Gotei 13 but, the Shinigami is only a title of Death God. It isnt a race. That being said, Kesei, Shinji and Rose are Vizards, Shinigami's that have Hollow abilities. I guess Hitsugaya and Soi Fong are Vizards as well since Urahara restored their Bankais. The Gotei 13 have 3 people that have Hollow powers. All an Arancar is a Hollow that has acheived Shinigami powers. If Shinji is a Shinigai with Hollow powers, why cant Grimmjow, a Hollow with Shinigami powers also be allowed into Gotei 13?

The Central 46 has among its regulations that a Shinigami is not allowed to attempt to obtain Hollow powers, and the consequence for doing such is that they will be treated as a Hollow through an through, which is initially what the plan was for Shinji et al. An exception was made for them 100 years after the fact because of the help they provided against Aizen and his army (and of course, because Aizen was the reason they even gained Hollow powers in the first place).

Now onto your point about Shinigami not being a race. That is true, but at the same time, neither is Visored. The Visored are simply the group of people that were "given" Hollow powers by Aizen. So no, Hitsugaya and Sui-Feng aren't Visoreds (plus, those powers seem to be temporary for them). And while the Visored are simply Shinigami with Hollow powers, they are still a sub-class of Shinigami. An Arrancar is the polar opposite of that, and is a sub-class of Hollow. Because Grimmjow is a Hollow first and a being with a Zanpakutō‎ second, the Gotei 13 would never allow him among their ranks, and the Central 46 would never let it pass if someone so much as proposed it.