User blog comment:Xilinoc/Ch. 629 - Gate of the Sun/@comment-10301320-20150604132137/@comment-11051098-20150605050728

We don't even know what letter Shaz had, if he had a letter at all.

Funny as it would be to see Renji's reaction if a resurrected Mask suddenly confronted the main group, I'd rather see BG9, Robert and Shaz, those whose epithet and powers we don't even know.

Mask got a full display of his powers and a decent fight, so I think he's had his time.