His dialog does in fact change every time you play! (Just make sure to read and play through the whole thing otherwise he won't change). Also, just say yes or no. (unless he asks for your favorite monster or asks if you are a pacifist or does genocide, and your name of course.) List of monsters you can say: Sans, Papyrus, Flowey, Toriel, Mettaton, Asgore, Undyne. You may request ideas that I could add! It can be anything! (Background stuff, more dialog after you finish, ect.)
Undertale, Flowey, and the rest of the character's mentioned belong to Toby Fox!
