McKAY: The Duplo represents Finns sister, Finn being the little boy from the live-action. The Duplo is her. The man upstairs said, Youve gotta play with your sister. Thats the thing youve gotta promise me. Ill let you play with my world, but now youve gotta let your sister come in and play with your world. Now, shes coming in, and thats the major thing that the movie is about. Whats different and similar about gender, when a boy plays vs. how a girl plays? What kinds of stories are there? Chris and Phil are super f**king smart and really thoughtful and sensitive writers. The kinds of questions and the interesting ideas that theyre getting into with this movie, its going to be like the first LEGO Movie was, where its about something else thats really profound. Im really excited about where the movie is gonna go because its about these things that are actual notions that people have that might even be unconscious biases, where people dont even realize that thats the way theyre looking at the world. You can do that in a movie like this, and still have it be a great musical with fun songs, and have action and all of the other crazy things were gonna get into with that movie. Its gonna be a really special movie.