In the most recent chapter, he was shown to have red eyes. This might explain why he is so close to Roctis and his daughter. There is also still one more unknown traitorous clan leader and it is possible for a noble to be a scientist.
Nope. He is not a noble. It was an art mistake.... Similar things had happrned to Frankrnstein (but thankfully the authors corrected the mistake later on). In recent chapters, it was for Rajak whose eyes were turned into blue when he first arrived at battle scene. The mistake can still be seen.
9th has white eyes which has been confirmed more than two times. Also, the other three traitors are likely not to be a part of Union but "them" .... or so I felt after seeing the meeting between Elders where they said Roctis will be the one who is most affected by news. The traitors are on equal terms so no "-nim" suffix ...at least not for someone's daughter.
I think Frankenstein should take this guy out, from my point of view there should be anyone capable of challenging Frankenstein's intellect, he is the longest living scientific genious who has surpassed even the laws of physics.