Centipede
From Ardrana
Centipedes are loathsome, crawling arthropods that arouse almost universal disgust from all intelligent creatures (even other monsters). They are endemic to most regions. In addition to normal centipedes, three other types are found on Ardrana: huge, giant, and megalo-centipedes.
One of the things that makes the centipede so repulsive is its resemblance to the worm. Its long body is divided into many segments from which protrude many tiny feet, hence the name "centipede" (or hundred-footed). The giant centipede is so named because it is over one foot long. The body is plated with a chitinous shell and it moves with a slight undulating motion. The creature has the added benefit of protective coloration, and varies in color depending on the terrain it inhabits. Those that favor rocky areas are gray, those that live underground are black, while centipedes of the forest are brown or red.
Note: Centipedes originally appeared in this form in the 2nd Edition Monstrous Manual for the AD&D game from TSR. Their use here is for the purposes of providing context for the campaign only.