Monster Birthday Cake

My sister was having a party for her 2 year old son and I offered to make the cake. She liked monsters so this is what I came up with. Three layer white cake (Red, orange, and yellow layers) covered in buttercream and Marshmallow Fondant. I made matching cupcakes, these were also covered in buttercream and MMF. I was actually inspired by some of the monster plushies on this site. Mainly the small green ones on the side of the cake.