Preheat the oven to 350 degrees. Line a muffin tin with black cupcake liners.
In a bowl, combine the chocolate cake mix, eggs, vegetable oil, and water. Stir well.
Fill each muffin well about 2/3 full and bake in the preheated oven for 15 to 20 minutes or until a toothpick inserted in the center of a cupcake comes out clean.
Remove the cupcakes from the oven and allow to cool completely.
Generously frost cupcakes with frosting.
On a flat surface, roll out fondant to about 1/8-inch thick using a rolling pin. Cut out 16 round circles using the cookie/biscuit cutter.
Gently place the black fondant circles on top the frosted cupcake to cover completely.
Attach the small round frosting tip to the disposable piping bag and fill the bag with the white frosting.
Gently squeeze the frosting bag to write ABC and/or 123 on top of each cupcake.
Apply a small amount of frosting on the back of the apple icings and white Good & Plenty's candies. Place on top of cupcakes.