Too many aliens? Bake and cool cupcakes as directed on box. Wrap 12 cupcakes tightly in food-safe plastic wrap and freeze for future use. Divide remaining ingredient amounts in half, and make 12 alien cupcakes.
If you have only one pan and a recipe calls for more cupcakes than your pan will make, cover and refrigerate the rest of the batter while baking the first batch. Cool the pan about 15 minutes, then bake the rest of the batter, adding 1 to 2 minutes to the bake time.