M.O.N.T.E.

The "killer robot" built by the guys was called M.O.N.T.E., which stands for Mobile Omnidirectional Neutralization and Termination Eradicator. It's a remote controlled device, quite heavy, with a buzz saw attached to the front. M.O.N.T.E. was destroyed by Barry Kripke's massive, fire-breathing robot in a one-on-one "street fight".

Despite being named "Omnidirectional", MONTE's wheels were standard rubber wheel (saw after he was destroyed). Throughout the episode he never displayed any omnidirectional drive capability. Which would help since Barry Kripke's massive robot is vulnerable on the side.