Code: Realize -major- spoilers (Saint-Germain route)
I couldn't guess the major players for this story because they're part of a secret society that guides the world for the greater good (coincidentally to benefit the status quo, hmm) through targeted murder; operating on global/generational stakes instead of the other routes' local/individual, these characters are exclusive to this route. Anyway, it turns out they're Guinevere Knightsoftheroundtable and Eve "Omnibus" Bible