Source of the mysterious Death Seed plague, the drochs are an insect race from Nam Chorios that start off life as non-sentient but can become sentient by absorbing the life of victims. A droch can burrow under the skin of its intended victim and drink their life while they sleep, or sometimes while they are awake.
Their small size, great agility and fast reproductive cycle means that they can wipe out the population of a city in a matter of only a few days. As the drochs drink their victim's life, they also absorb intelligence. The larger, captain drochs can absorb life through the smaller drochs without having to come into contact with the victims themselves.
One mutated captain droch, named Dzym, lived to be 250 years old and grew to human size, absorbing intelligence for all that time.