Yoru Sulfur

Yoru Sulfur as he has been portrayed so far seems like nothing but a faithful servant of Bayaz, yet a number of people on this sub (myself included) have wondered whether he might eventually seek to challenge his master's rule. Unlike Yulwei he has no delusion that Bayaz is a righteous man, unlike Kahlul's easters he hardly seems to be motivated by any sort of ideology. I suppose he might just be a really loyal guy who genuinely likes Bayaz and has no desire to lead, but I just can't buy that. Surely a guy like Sulfur who is cold blooded killer, and who is basically a Darth Vader to a Palpatine, might be ruthless enough to consider offing Bayaz at some point. I'm sure he could do it, given the right opportunity. Maybe he's happy with his position right now, but I absolutely wouldn't put it past him, especially if Bayaz was weak. What do you guys think?