as a thought, 2nd edition, players options [not that it mattered] we were part of the defense force of an acadamy of mages, our wizard of the party was also the hunter of witches and necromancers.
we were fighting one such necromancer who inhabited the catacombs below the city. We found an entrance and bought the property. The hunt was on! we had to deal with all kinds of skeletons, the worse was exploding skeletons. when brought to 0 hp or below, the head exploded. inside the head was chains nails and other shrapnel.
pathfinder offers many skeletal templates!