Hear me out: ML is actualy the dead brother. He faked his death to pursue FL and get away from the princess. He killed Coby beacuse he could recognise the younger twin since he knew him really well.
Also he knows a lot of things and has connections? Like, how did he knew about princesses lover? And reached out to help him (probably to piss her off)? How did he know he was abused??? Thats something that her fiance could have known, but not a guy that was stuck in the monastery from a very young age








It's hard to say anything certain about our knight, but the thing that i see as his strongest characteristic is his strong sense of pride and confidence, often even overconfidence in his abilities, that is the source in most of his failures. Even the death of his companions he sees as his personal failure. Yes, he grieves, but he is quite dense when it comes to his own feelings.
I would love to see him use his face disguise more. He isn't used to having facial expressions, so it would let us peek at what us really brewing inside him. And, since with the disguise looks like a mix of people that influenced him the strongest, I wonder how it would look now. But that ability probably got lost by now beacuse of reset...