Marlwolf

The Marlwolf (マオルヴォルフ) is a large digging mech piloted by Teisel Bonne. Teisel uses it to try and dig down to the Clozer Woods Sub-Gate since he could not get the key to access the ruins through the surface entrance. It has indestructable armor on the outside. It attacks with large green energy orbs from its hands and Servbots throw bombs out the back hatch. If its hatch is opened, it can be attacked.

Trivia
Marlwolf is a play of the word maulwurf, which means mole in German.