Prepare cake and gelatin according to package directions. Except use 9" round cake pans for the cake. Cut a smaller circle out of one cake and using it as the head. Fill the hole left over with gelatin. Place the other layer on top and trim to shape. To prepare frosting, in a mixing bowl, add blue food coloring to chocolate frosting until black in color. Frost cake black. Then, use the black licorice as legs and gumballs as eyes.