The Worm Mecha is the first boss from Metal Slug 7.
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 will also fly over the player(s) to fire turrets and rebel soldiers from its hatches of each segment. It will also launch a saw that throws explosive debris.
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.