The Metal Knight Unit is a remote-controlled robot made and operated by Bofoi. It is his primary and favorite combat machine. Metal Knight is a very large and intimidating metal robot with multiple cannons attached to its back. It has a distinct set of three circular marks on its “face” and a yellow hazard triangle on its back.

The Metal Knight unit is first shown when Bofoi is testing its weapons against a colossal meteorite. The robot fires a volley of large missiles that converge on the meteor and causes a massive explosion. This, unfortunately, is not enough to stop the meteor which bursts through the cloud of smoke caused by the explosion, much to both Genos and Bofoi’s surprise.