I made this cake for my son's 10th birthday party. He wanted a cake with Spongebob and Plankton. It is a marble cake with vanilla buttercream frosting and buttercream MMF. Plankton was made using a twinkie and fondant. I cut the holes in Spongebob fondant to show the green buttercream through before placing it on the cake, wish I had waited until after I put it on because some of the holes fell where they showed behind his mouth...lesson learned.