As its name implies, it is a deep purple color, with a pale yellow underbelly. Separating its yellow part from its purple part are hard crests going down its sides. It is well armored and segmented. One end ends in a large toothed mouth with slit-like eyes above it and dragon's ear-like limbs at the sides, and while many worry about falling into the worm’s mouth, they often forget about the creature’s tail, which ends in a poisonous stinger.