User blog comment:Xilinoc/Ch. 599 - Too Early To Win, Too Late To Know/@comment-5606268-20141002152002

That was well, unexpected. I don't expect Senjumaru to be killed with just that seeing as she's probably woven her way through that somehow, but these Elite Sternlicthers (Sternritters?), they seem to be the real deal. Oh and if it takes FOUR of them to beat Senjumaru, there are still Four Royal Guards who we haven't seen in action, who quite possibly are more powerful (Toushin and Ichibei).

Anyways, if we're right, and am only saying this because Ichigo doesn't inherently go for the kill, the Sternritter C is probably Shaz Domino. Why? Because he was seen "controlling" members of the 12th division into killing each other, if memory serves correctly. The way he did it seemed like they were under his "Compulsiveness"