Board Thread:Questions and Answers/@comment-28093567-20160407220457/@comment-5398287-20160407232635

I wouldn't take the dark area in Kenpachi's forehead as being anything special - he's got markings all over his face in Bankai. As for whether or not he could become "transcendent" a la Aizen, we really don't have a clear definition for "transcendency" in this series since it's only happened to Aizen and Ichigo, both of whom are exceptional cases: Aizen used the Hogyoku, aka the plot-twisting device, to go past the limits of both Shinigami and Hollows, whereas Ichigo kinda melded his various powersets together for a brief period of time and trained reeeeeeally hard. In both cases, there was Hollow stuff involved, and not the Visored-style melding, but instances of Hollow power that were unique in some way. At the moment, Kenpachi is reeeeeeally strong, but unless "transcendent" is just having one's Reiatsu become undetectable due to being so dang high, he's not gonna reach that level. Not like it matters too much, in all honesty.