User blog comment:Xilinoc/Ch. 547 - Peace from Shadows/@comment-8669536-20130904133657/@comment-5657895-20130904180329

I think it was Askin as well. I think his abilities have something to do with these Shadows mentioned and dimensional travel, so I think his Ancient Script is the 'Door' or the 'Dimension'. He must have something to do with it at least.

And his lips do look like they suit the hooded guy. He looks like Aizen, but he has Ginjo's features too.