Naedocyte Shockers are the soldiers of the Naedocyte Collective, usually found roving in great swarms. Their primary objective is to protect their Breeders, as well as build up the ambient static charge that both serve as their primary source of nourishment and primary means of attack. A most peculiar group of Hoxxes natives - but one that should not be underestimated, despite their almost cute appearance. We have lost many miners to them already.
— Miner's Manual Description
The Naedocyte Shocker is a hostile Creature found exclusively in the Dense Biozone and Glacial Strata biomes. It is a small, flying jellyfish-like creature which can create electrical currents around itself as an attack. Some strange unknown liquid dribbles from its underside. It is among the smallest enemies in the game. It doesn't have any apparent form of propulsion, and seems to get by on levitation.
The Naedocyte Shocker will spawn either by "digging" its way in or will float towards the players from around a corner, often in large groups. Once they are within contact range of a Dwarf, they will produce an electrical shock which slows attackers. There is a brief delay period between shocks.
The Shocker is comparable in behaviour and purpose to the Glyphid Swarmer. Alone they take no effort to deal with, but their key power comes in numbers. Many Shockers can surround the player at once and deliver their shocks, which can very quickly rack up damage especially on higher Hazard Levels.
Naedocyte Shockers went through several different iterations. Shockers were originally introduced as the passive Cave Jellies in the Dense Biozone in Update 12, they were reworked and reintroduced as Naedocyte Shockers in Update 21, then were given new models in Update 23, and then passive Cave Jellies were reintroduced as a separate creature sometime between Update 23 and 24.