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After the successful design of the first destroids, the U.N. Government began exploring various concepts in destroid technology to build main battle robots (MBRs) suited to different operational roles. One such concept was to create an anti-aircraft destroid that could mount powerful, super-far-range weaponry for firing in space. A joint development program by Viggers-Chrauler was authorized by the U.N. Government and resulted in the eventual deployment of the Mk X Defender Destroid. Utilizing the standard destroid ambulatory system, the Defender featured a new upper chassis with two, double barrel Erlikon Contraves II weapons systems firing 78mm rounds. These impressive wide-bore guns fired 500 rounds per minute from each of the four barrels and had a muzzle velocity of 3,300 meters per second. Two large ammunition drums mounted on top of the chassis fed through the weapons bays for fast firing and designs were eventually made for enlarged magazines featuring a much greater ammunition capacity.

The Mk X Defender Destroid proved successful and was approved for mass production. Unfortunately the weapons systems were prohibitively expensive and notoriously difficult to manufacture, resulting in a lengthy lead-time to deployment. The first Defender units saw action shortly after the beginning of Space War I but only in limited numbers. Forty units were manufactured aboard the SDF-1 Macross and served throughout the war along side other destroid units. Though the Defender was a capable mecha, as a defensive unit in constant front line engagements, these destroids suffered heavy losses during the war.

Type Anti-aircraft robot, series 4
Manufacturer Viggers/Chrauler
Introduction March 2009
First Deployment Unknown
Accommodation Pilot only
Dimensions Height 11.27 meters (overall), 10.73 meters (up to antennae); length 4.3 meters; width 8.6 meters
Mass 27.1 metric tons
Structure Unknown
Power Plant Kranss-Maffai MT828 thermonuclear reactor developing 2800 shp; auxillary fuel generator GE EM10T rated at 510 kW.
Propulsion Multiple low-thrust vernier thrusters beneath multipurpose hook/handles.
Thrust-to-weight ratio Unknown
Performance Unknown
G Limit Unknown
Design Features Vertical tracking main sensor; range setting radar and starlight scope; removable weapons bays and enclosed cockpit; removable ammunition drums; 2 x forward searchlights.
Transformation N/A


  • 2 x Erlikon 78 mm liquid-cooled high-speed automatic cannon Type 966 PFG Contraves II (standard 200 rounds each)

Bombs & Missiles

  • N/A

Optional Armament

  • 2 x large capacity ammunition drums.