When I asked what kind of cake the customer wanted for her son's birthday party, she said "Whatever, he likes, Superman, Batman, Spiderman. So, whatever you think" So, I couldn't resist doing all 3 in one cake. The Superman cake was a 1 layer cake with buttercream frosting and a plastic Superman piece on top. The Batman layer was double layered with buttercream filling and frosting. The bottom was covered with red paper and piped "web" with black frosting.