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Major Grade One This article, M820A Scorpion Main Battle Tank, written by Ajax 013, was voted as the Best Air/Ground Vehicle of 2008 in the First Annual Halo Fanon Wikia Awards.

40px-Terminal.png This article, M820A Scorpion Main Battle Tank, was written by Ajax 013. Please do not edit this fiction without the writer's permission.
Scorpion MBT
Production information

Masver-Tor Engineering


Main Battle Tank


cR.3.5 Million

Technical specifications

10 meters


52 tons

Engine Power

12 cylinder Hydrogen ICE producing 1500 horse Power.

Fuel Source

1095 kW


Heavy duty Titanium-ceramic plating with layers of AEGIS, liquid-glass composite laminate, carbon fibre and heat resistant materials. None Explosive Reactive Armour have been added also.

Sensor Systems
  • Target Acquisition and Designation System, Driver Night Vision System
  • Motion Trackers
  • GPS
Targeting systems
  • Multispectrum Optical Sensors
    • Optical
    • UV
    • Thermal
    • Night Vision
  • Laser range finder
  • SATCOM Uplink
  • 90mm High Velocity Gun (1 w/70 rounds)
  • Secondary coaxial M247H2 HMG (1 w/1000 rounds)
  • 105mm High Velocity Gun (1 w/66 rounds) G1 Variant
  • 120mm High Velocity Gun (1 w/66 rounds) G2 Variant
  • M247H2 HMG Turret (1)
  • Driver
  • Gunner
  • Commander



Anti-Vehicle Platform

  • Poltergeist (USR)
  • Predator (Vorenus)
  • Knight (Machina)
  • Basilisk (Plainfierians)
  • Compound (Necros)

Necros War


United Nations Space Command


"Whats the point in replacing something that's already perfect?"
―Anonymous Tank Commander

The M808G Scorpion Main Battle Tank is the sixth iteration of the Scorpion MBT, first being fielded in 2606. It is near identical to its predecessors with only minor modifications to the tanks software and hardware. The turret combines the ideas of former versions, using the co-axial gun, while it also uses the forward turret, but with a heavy modification. The turret is now a interior operated sealed off turret, protecting the gunner from enemy fire. It features a multitude of outside cameras along with the Tanks own sensor suite to identify targets and engage them. With the sensor suite, the turret is no longer manually moved and sighted through the neural network but now operates like a Target Acquisition and Designation System/Pilot night Vision System used on gunships, in this case a Target Acquisition and Designation System, Driver Night Vision System that is slaved into the helmet of the driver, who when turning his head, the turret does the same. The turret sights are hard wired into his optical suites, giving him view of both the main gun and the drivers view.


The M808G Scorpion is nominally crewed by three men. The driver, who is sat to the forward, underneath the main cab, directly behind him the gunner, then sat to his right is the commander. The driver controls feature two throttle controls for the left and right, with independent suspension controls, a wrap around holographic Heads Up Display with augmented reality and access to the damage control system. Sat behind him is the gunner. The gunner is wired to the gun system, with the helmet linked up the gun sighting systems. The Gunner is linked to a heads up display in his helmet's video output, allowing him to observe through the tank's main sight with his left eye and freely observe the wrap around holographic display of the arear around the tank with his left. The gunner has access to a joystick that he can use to manoeuvre the turret around or traverse it up or down, with a trigger to fire the primary or co-axial gun. Next to this is the over-ride controls to allow the gunner to target solely through his helmet mounted tracking system, allowing him to track the target with his head and eye motions. On the left side of the gunner is the primary fire control systems, allowing him to switch ammunition from the internal storage, access satellite, air or ground reconnaissance to search for targets and engage at extremely long range, or through walls, using the computerised firing system. Sat next to the gunner is the commander, with access to the HUD, the countermeasure suite and the PALADIN Weapon Station just ahead of him, allowing him to defend the tank against multiple threats, deploy countermeasures and direct it. The commander also has his own access shaft allowing him to observe without electronic aids. From here he can also access satellite maps, the communication systems and the damage control system.



The primary armament of the Scorpion tank is the M512 90mm Smooth Bore High Velocity Cannon. This cannon is a state of the art gun, mounted on a fully automated loading and targeting turret. The gun is milled as a moothbore gun to allow it to use the widest variety of ammunition, including spin stabilised shells, sabot discarding rounds and rocket propelled smart rounds. The barrel is coated in insulting thermal jackets, controlled by a independant computer, allowing it to prevent uneven thermal warping. The primary gun is linked to a triple set of sighting systems, with a primary optical camera, with a twenty times optical zoom to allow it to target out to extreme distances, a hybrid passive and active infra-red lighting system, that allows it to view in low levels and enhance this view with high heat sources found in infra-red and the last sighting system is a LASER unit, capable of acting both as a range finder but also as a LIDAR system, allowing it to scan and accurately range targets. The main gun is fed by an auto-loader in the turret, utilising a number of internal stores with digital encoding to tag each round as its specific type. Rounds are loaded into a six shot style revolver and different rounds can be removed or replaced, allowing the gunner to have at least six different kinds of ammunition read at all times. The ammunition storages are hardened against attack, but are designed to explode outwards in case of attack, protecting the crew from a potentially deadly ammunition cook off.

The turret also houses a co-axial gun, a M247H2 Heavy Machine Gun firing 12.7x99mm rounds. This chain gun is fed from an internal drum and has to be manually reloaded, but carries sufficient ammunition stows to allow it to operate for long periods of time. The gun has its own bore camera to allow accurate fire and can be used as a spotting weapon for the main gun. The weapon is extremely efficient at mowing down unprotected infantry.

The Secondary weapon is a PALADIN Weapon Station The PALADIN WS is a versatile, remotely operated weapon station, allowing the commander to maintain a close in defensive weapon. The Paladin is controlled completely remotely, with its own built in sensors and countermeasures. The PALADIN can be fitted with a M247H2 HMG, a M11 Autocannon, a MG460 AGL, M41B2 MAV/AW, MX93 ADWS or M780 SPW to allow it to adapt to different situations, such as anti-infantry, anti-armour or close in protection.

The G1 model was upgunned to a 105mm cannon, with a new muzzle break designed to reduce recoil. The G1 was introduced as a intermediate weapon during the Remnant War before the introduction of the G2, with a 120mm cannon, which became standard issue during the Necros War. The G2 was far more powerful than previous versions.

The G2 had the facility to mount a pair of sponson weapon systems. These bolt onto pylon nubs on either side of the gun and elevate with the main gun. These pylons allow a tank to augment itself with additional fire power to augment its ability, such as short range rocket artillery, anti-aircraft capabilities, anti-tank missiles, anti-infantry weapons and so forth. Usually one Scorpion per platoon will be augmented in this manner, to allow it to preform additional tasks assigned by command. The sponson gun mounts include direct fire 70mm ASR-34 Chimera rockets in a 25 round launcher, for medium range fire saturation, a pair of 'Calliope' launchers with 19 110mm rockets for short range artillery bombardment, a pair of 30mm autocannons for mid range fire suppression, a pair of heavy flamers for short range fire suppression, coating an area in napalm, a pair of M41 Light Anti-Aircraft Guns for close in anti-infantry fire, a single BGM-89 Venom ATGW launch tube for long range anti-tank fire or a single line breaching charge.

Counter Measures


Electronic Countermeasures and Warfare

Armour and Chassis

Powerplant and Engines



Since the rearmament program the UNSC requested a number of new vehicles. Masver-Tor engineering sorted this problem by building a wide array of support vehicles on the Scorpions chassis, as well as several other vehicles using its chassis and engine.

M808G1 Scorpion Main Battle Tank

Scorpion g1

The Scorpion G1.

The G1 was a modified version of the Scorpion carrying a up gunned 105mm cannon.

M808G2 Scorpion Main Battle Tank

Scorpion g2

The Scorpion G2.

The G2 is the final upgrade to the M808G, up gunning it with a 120mm cannon, along with installing metamaterial antennae, turbomolecular fume extractor, upgraded engine with high grade titanium machined parts, new transmission, carbon nanotube plated diff, turbo charger, upgraded frontal plating, foam filled V cavity underneath the main hull to protect against ground munitions, upgraded sensor package, upgraded electric motors in the turret, adaptive suspension using adaptive Magneto-rheological dampers on each tread and infra-red suppressors on the exhaust. It is planned for the G2 to become the only M808G MBT in service by 2615, by upgrading G and G1 models.

M808G Scorpion Armoured Repair and Recovery Vehicle

The M808G Scorpion AVE has removed both the turrets and these have been replaced by two high powered winches on the rear boogies and a crane in place of the turret. The front boogies carry large metal shielding for the support engineers, often armed with welders, shovels and other engineering equipment. At the front it possess a hydraulic dozer blade on each end with scarifiers for digging into hard surfaces to become a stabilizer blade, capable of giving it greater lifting weight and also move debris away. It packs a highly improved engine, taking up space formerly used by the turret, to give it greater power, along with the crane which uses a liquid metal layer made famous by the MJOLNIR armour, now cheaper to make and use because of new technologies. It is easily capable of lifting and or pulling free a damaged or stuck Scorpion tank, along with even dragging a broken down Elephant. It also has an equipment storage, with spare ceramic and titanium plating or tracks to replace damaged ones on vehicles.

M808G Scorpion Assault Vehicle Engineers

The M808G Scorpion AVE is essentially a Scorpion with a modified turret, bogies and a front and rear carrying module. The turret is now a 190mm demolitions mortar, not effective for dealing with vehicles but ideal for demolishing buildings and obstacles, though it has effectiveness against infantry. It's boogies feature large 'shield' plates, protecting the riders from enemy fire and allowing it to carry several personel in saftey. and the boogies also now carry hydraulic support struts. The two modules are made for carrying optional equipment, such as the front module, it is able to take mine ploughs, dozer blades, front load, it can use a large roll of tough material to give it and the tanks following it a stable footing in muddy, sandy or other tough terrains, it can take a bundle of stiff pipe on both modules which can be layed across ditches to provide the tank and the following ones ease of movement over them. The rear module can also take a earth moving scoop, a earth borer capable of boring 2 meters, a rake for digging up rodes, it can be attached to an armoured sled for pulling along sapper teams or equipment, a MOLE Sled, for deploying mines or a WEASEL sled for deploying mine clearing missiles. Most of the equipment is hydraulic. It also carriers onboard equipment for cutting granite, steel or drilling along with armoured explosive carriers.

M808G Scorpion ARC

The Bridge Layer variant, the M808G Armoured Ramp Carrier has the turret removed and insteads carriers a hydralic cradle carrying either 24 meters long and 4.16m wide or 13m long and just as wide bridges. These are carried in a double hinged section and can bridge gaps 2 meters shorter than their length.

M808G Scorpion Command Vehicle

The M808G Scorpion Command Vehicle is designed to give a mobile, armoured, command vehicle to commanders of armoured regiments, allowing them to stick with the tanks they command rather than having to take a position to the rear. The vehicle is near identical to the standard Scorpion externally, parring a wrap around aerial on the turret but internally the tank contains a vast wealth of Command and communication systems. The commander actually operates his regiment from a secondary command seat behind that of the driver. His helmet is hardlinked into the UNSC command network and allows him to plan attacks, guide his soldiers, request bombardments and deliver objectives. He can also access holographic targetting data of both the tanks under his command and the SATCOM network.

M809A Deathstalker Self Propelled Anti Aircraft Gun

The first major refit of the Scorpion, the Deathstalker uses a Misriah 40mm gun in a quad set up, with a computer guidance system that can track air targets. The rounds are 'Smart Shots', a new round with a motion sensor implanted in the rear of the warhead. Taking up only a thin section with the actual motion sensor and detonator, should it pick something up outside of its trajectory, it detonates, sending explosive bomblets and shrapnel, causing more damage than initial or potential impact. Should it be on course for impact, in explodes on contact with its target.

M810 Fattail Self Propelled Hybrid Anti Aircraft Gun

The Fattail mounts a Hybrid anti air defence system, using a turret incorporating a pair of 40mm guns and eight Stinger SAM launchers. This can be used to devastating effect, having both the long range and short range AA capabilities of the Deathstalker and the Wolverine.

M811A2 Monitor Anti Vehicle Platform

The Monitor is armed with a powerful gauss cannon to create a excellent tank hunting platform, at the cost of effectiveness against personnel or structures.

M812E4 Komodo Anti Vehicle Platform

The Komodo is a heavily upgraded version of the Monitor that instead of a gauss gun uses a larger LASER cannon capable of severely damaging multiple tanks simultaneously. The weapon is strong enough to even assault Scarab walkers.

M813 Goanna Heavy Infantry Support Vehicle

The Goanna is a specialist variant, with a fixed box structure on top of the chassis mounting a 320mm rocket mortar for engaging and destroying enemy fortifications. The main gun can penetrate four metres of reinforced concrete, allowing it to open any defensive position. The super structure has heavily reinforced armour.

M814 Panther Close Assault Vehicle

The Panther is a specialized close assault vehicle, fitted with two 20mm rotary cannons and a battery of anti-tank missiles. This rank is designed to defeat enemy personnel in urban situations, where standard M808s would suffer.

M1050 Brown Bear Anti-Heavy Walker Vehicle

The Brown Bear is an Anti-Heavy Walker Vehicle armed with eight MGM-2 missiles for engaging heavy assault walkers such as the Covenant Scarab and the Necros Gravedigger.

UNSC Remarks


Ground Vehicles of the UNSC

Scorpion & Variants

Scorpion MBT | Scorpion ARRV | Scorpion AVE | Scorpion ARC | Death Stalker SPAAG | Monitor AVP | Komodo AVP | Panther CAV

Heavy Tanks

Tiger HBT | Razorback Siege Tank | Mammoth Siege Platform

Warthog Knight FAV family

Warthog FAV | Warthog Knight LRV | Gauss Hog LAAV | Rocket Hog LAAV | Guard Hog Crusader | Warthog Assassin RAV | Warthog Troop Transport | Tread Hog DTV | Warthog Medical Vehicle | Warthog Ammunition Carrier | Spark Hog MEWS | Fire Hog CB-RADAR| Warthog Recovery Vehicle | Warthog Flatbed Truck

Motorized Vehicles

Mongoose ATV | Gungoose ATV | Jackrabbit ATV | Gunrabbit ATV | Armadillo PTT | Buffalo HSV

Unified Combat Reconnaissance Vehicle

Coyote CRV | Stallion CRV | Bloodhound CRV | Puma ATV | Caracal ICV | Chameleon RV | Wallaby MEV | Ocelot AAA | Capybara C2V | Camel ASV | Bandicoot MLV | Elk REV | Mustang MGS | Manx MEWS | Boar MC

Personnel Carriers

Crocodile IFV | Mastodon APC | Bison APC | Jaguar Command Vehicle


Wolf ATAAS | Mule Cargo Loader | Mantis ADS | Cyclops HAS | Dragon ADS

Artillery and Anti-Air

Wolverine SPAAA | Bombardier SPMA | Firefly MLRS | Kodiak Heavy Artillery | Diamondback MADS

Elephant and variants

Elephant HRV | Behemoth ICP | Aurochs HAP | Alpha C2P | Omega MMP | Hippo MFH

Riverine and Landing craft

Swordfish RIB | Pike PB | Walleye PB | Orca-class Landing Craft Air Cushion

Naval Craft

Barracuda-class Corvette | Mako-class Frigate | Stingray-class Amphibious Assault Ship