So-called ghost bullets were not physical ammunition, but a form of magical attack. Compared with the usual fireballs, however, The Spectre fired smaller, denser pellets of energy.
His weapons were two flintlock pistols, but that was merely their appearance. It would be more accurate to regard them as incorporeal wands, so his current act of firing at the skeleton was essentially spellcasting.
As an invisible spellcaster, his attacks were naturally invisible as well. Such attacks would probably have killed a living person several times over, but the skeleton was clearly no ordinary creature. The barrage made him sway and stagger, yet he refused to fall. His first reaction was not even to dodge, but to protect his black cloth sack.
How did he protect it? It was simple. He used the tip of his shoe to nudge the sack beneath the unconscious Superman's stomach, using the Man of Steel to cover it. That made it bulletproof, didn't it?
As mentioned before, Superman only lacked resistance against mental magic. He could still take ordinary direct-damage spells quite well, and the Tuxedo Skeleton clearly knew that.
After hiding the cloth sack to keep the medicine powder inside from being hit, he began his performance amid the hail of bullets.
He actually started dancing. First, he crossed his hands above his head and struck a pose, then began Moonwalking backward. One moment he slid left, the next he slid right, constantly spinning and grabbing his crotch in pose after pose, yet he never moved away from Superman and the cloth sack to evade the bullets.
Though he could not speak, his jawbone kept opening and closing, making him look as though he were laughing and singing.
The Spectre increased the force of his attacks. The invisible energy rounds even traced faint, intermittent paths