Hazmat Skeleton

Ecology
Hazmat Skeletons are the reanimated remains of Kigum medical and research personnel who died during the "Weeping Rot" outbreak in the Quarantined Ward. Their heavy, lead-lined leather suits have fused to their bones over decades of exposure to necrotic Aether. They are tragic reminders of the city's failed experiments.
Combat Mechanics
The skeleton is entirely immune to poison and acid damage. It attacks with rusted surgical tools or by delivering "Necrotic Slaps." When the skeleton is destroyed, its pressurized suit ruptures, releasing a cloud of "Aether-Spores" in a 10-foot radius. Any creature in the cloud must make a DC 14 Constitution save or take 2d6 necrotic damage and be poisoned for 1 hour.
Loot
The remains may contain an "Intact Leather Suit." If purified and repaired by a leatherworker, it can be used to craft a set of armor that provides resistance to poison and acid damage.