Grey

is the name of the that resulted when Seireitou Kawahiru was infected with Hollowfication by Tadoku Getsueikirite and.

Appearance
Grey appears much like Seireitou does, but with more Hollow-like features. His hair becomes more wild and untamed, his amber eyes are transformed into more Hollow-like eyes (black sclera and yellow irises), and his body gains a Hollow-like armor around it. His Hollow hole has not fully opened yet, due to the mask not fully forming, hence its absence in this form.

Grey's hands are disfigured, much unlike Seireitou's own hands, becoming clawed, grotesque monstrosities. He has gained similar horns on his shoulders and his kneecaps. In addition to this, a large silver gem has appeared on his forehead. He also seems to have lost his Zanpakutō while transformed.

Trivia

 * His name follows a similar naming scheme to, a recent Hollow featured in the manga.