The exploding roachsters are kamikaze Kankrelats that will run up to a player and explode next to them. They are very weak and only take one hit to destroy. They are seen in: Code Lyoko: Quest for Infinity and Code Lyoko: Fall of X.A.N.A.. Instead of having the normal tan color of kankrelats, they are green and they form a ring before exploding. When attacked, it it will begin to make gurgling sounds and its body will pulsate. It will then explode, highly damaging any character within a short distance.
Exploding Roachsters also appear in Code Lyoko: Get Ready to Virtualize. There, they begin a suicide countdown after taking damage. They behave as normal, but slightly stronger, Kankrelats in Fall of X.A.N.A.