Franz Erhard Kranz was originally the Master General of Fuhrer Grimm and served under him at the start of the Krux-State War until killing the last Krux Leader much, but was then promptly betrayed by Adler Grimm. He taught at the Artillery Doctrine School and invented the Long Range Artillery Doctrine. He also custom-engineered his own omega cannons, Two KRANZ CANNONs, which are seen at Fortress Rubicon.