Though they greeted the Fenrir battlesuit with skepticism, the LAAF found the new quad armor useful when a good punch and only decent movement were required, but they still sought a unit capable of faster recon work. While most Houses saw the quad BattleArmor as second class at best, Lyran engineers saw promise in the superior motive power possible in such designs and redirected their efforts to create a suit faster than any other, and so low to the ground that it would be almost impossible to hit. Deciding to push the limits, Lyran engineers returned to the drawing boards to create the Rottweiler quad battlesuit.

         Capable of speeds up to 54 kph, the Rottweiler can close in fast and yet has a thicker hide of more advanced, sensor-baffling armor than the Fenrir, despite weighing only half as much. Eschewing the vulnerable turret assembly of the Fenrir, the Rottweiler uses a simple spine-mount for its main laser and "Firedrake" anti-personnel weapon. This change enables the pilot to lie inside the machine much more comfortably than possible in the Fenrir, so Rottweiler troopers can endure longer missions with less fatigue. Enhancing the Rottweiler's capabilities as a scout, the suit also features an enhanced sensor suite.

         A few squads were issued to the Loyalist Eleventh Lyran Regulars shortly before their deployment to Skye in 3065. When Free Skye forces turned on him, Colonel Donner of the Eleventh deployed his Rottweilers as part of a delaying tactic, keeping the separatists at bay as he gathered his surviving DropShips for a retreat. The Rottweiler troops that survived several counter-infantry actions after the disaster were integrated into Donner's "irregular operations troops", which were left behind to harass the Free Skye forces over the next year and a half.

         The vast majority of Rottweilers are used by the Merchant Princes of the Lyran Commonwealth, by their friends in the Hanseatic League, or by other realms once under the sway of Tharkad. While some of have made it into other hands, nobody else builds and fields them in standard formations.