While he certainly is op because he already knew many secrets due to time traveling back. He is not the kind of "pretend and ambush idiots" kind of protagonist.

He is also not too much of a saint, he however truly wishes for mankinds survival. So lawful neutral.

Overall a good read. Characters have life in them. They have their motivations and thoughts. Though character building could use more expanding in the future. It is the nature of the novel however, that forces little interaction between characters.