Alright, let's get started...
The first question is again a bit tricky, I can't think of anything better than "Do you have an initial that is either 'I' or 'U'?" or "Do you have just an initial?". If just an initial doesn't work, it will be a question about the character. - yes
Second - does the name of your weapon contain the letter 'K'? - no (well, it's a logical question, it eliminates Nancy, Ru, Li, and Maniac)
Third - female? - yes
I think you misinterpreted the first question, and if I'm not mistaken, Dag is a guaranteed match. Although I wasn't particularly doubtful about that. I even have some ideas about his specific role, but I won't voice them.