Morden used this drill mech to attack the incoming Regular Army soldiers. One attack includes using its drill to either dig up from the ground to hit the player(s) or to fire explosive debris at them. It can fly over the player(s) to fire turrets and rebel soldiers from its hatches of each segment. When hovering near the ground, the Worm Mecha launches a saw that also throws explosive debris.
The Worm Mecha's segments house Rebel infantries that attack from above then drop down to the battle arena. Twin turrets are deployed between segments.
The Worm Mecha can be defeated by either depleting its health or by destroying every segment.
After it is defeated, a cutscene will play showing Morden thrown out of one of Worm Mecha's body segments by an explosion inside it.
- The tentacles of the final boss, Kraken, are recoloured versions of the Worm Mecha sprite.