If you aren't familiar with Doctor Who, he travels through time and space in his tardis, which looks like a blue police box, fighting stupid robot-things called daleks:
It's a three-layer chocolate cake, vanilla buttercream between the layers, with a thin covering of dark chocolate ganache, and pale yellow buttercream on top. The tardis is chocolate cake with the thin ganache covering and then rolled fondant. The daleks are fondant as well. I like the way the fondant contrasts with the buttercream, so the tardis and the daleks look as if they're an alien imposition on the cake. In retrospect, I wish I had done the piping in pink, to make it look even girlier.