
It's Arima...i've been saying this since he first appeared in TG, and ever after reading TG:jack
Only gloul's hair turns white when they suffer traumatic experiences (Rize, Kaneki, Arima, Takizawa...) and they have only showed us one part of Arima's past. And, if I recall properly, there was a time when they were fighting one eyed ghoul, and they were calling Arima for help, but he never apperared... coincidence?.
( ̄へ ̄)BTW I really wish Amon is alive, and does kaneki remmember anything?
I cried a river ╥﹏╥