Giant cockroach

Giant cockroaches were giant insects found in the Underdark

Description
Giant cockroaches looked identical to their smaller cousins, just much larger. Their carapace was usually black, brown or grey in color and was covered in oily secretions.

Abilities
Giant cockroaches were capable of detection the presence of any creature in direct contact with the earth within. They had a limited flight ability over a distance of up to. The oily secretions that covered their carapace were so potent that any creature within was overcome with nausea. Giant cockroaches were immune to all mind-affecting effects and spells.

Behavior
Giant cockroaches were extremely combative and hostile.

Combat
Giant cockroaches attacked nearly any creature it encountered.

Ecology
Giant cockroaches lived and reproduced in warm areas near water, surrounded by rotting organic material.