Alright, so I re-uploaded this pic with shading and an explanation. I don't really think everyone knows who this is and I THINK that's why she's not as popular as my other main character drawings, that or I'm a reaaaaally horrible manga artist ( I hope it's not that )

So, basically she's a Privaron Espada, meaning she was one of the original 10 Espada but had here rank brought down because a more powerful Arrancar took her place as was the same with the two other Privaron Espada. She eventually fights with Uryu Ishida and Pesche Guatiche. She was then defeated and up till now is presumed to have been excecuted by the Exequias.