After Kevin killed these 3 evil beings, only the army of Shadows disappeared as there energy source was linked to their master, but the other 2 armies stayed there regardless if it was the Skeletons or the dead creatures, once summoned they had both their own energy source and could survive even without a master.
But these two armies didn't stand a chance against 2 Gods, 2 Priests, 2 Divine creatures, the Warrior Spirits and very powerful Mages and Fighters.
