Hello everybody,
What I am referring to is the purple/yellow speech of CT bosses, Dios Exiel and most dd1, dd2 and jungle mini-bosses. I assume it's possible to add new ones to different mobs but I don't know how. What I do know is that the messages themselves are stored in kr_string.DB, located in Bin\Data.
If there's someone who knows how to add new speeches, I am asking you to share this information with the community.