M820 Scorpion

From Halopedia, the Halo wiki

This article is about the iteration of the Scorpion tank introduced in Halo 5: Guardians. For other uses, see Scorpion (disambiguation).
M820 Scorpion
H5G - M820 Scorpion.png
Production information


Chalybs Defense Solutions[1][2]

Product line:




Technical specifications


10.2 meters (33 ft)[1][2]


8.5 meters (28 ft)[1][2]


5.7 meters (19 ft)[1][2]


31.7 metric tons (31.2 LT; 34.9 ST)[1][2]

Maximum speed:

128.7 kilometers per hour (80.0 mph)[2]



One operator, one gunner[2]


Up to four passengers[2]


Year introduced:


In service:

Post-Covenant War conflicts[2]


  • Anti-armor platform[2]
  • Direct assault and localized defense[2]


United Nations Space Command[2]


The M820 Main Battle Tank (M820 MBT), commonly known as the Scorpion, is the United Nations Space Command's primary main battle tank, introduced in 2557. Manufactured by Chalybs Defense Solutions,[2] the M820 Scorpion is the successor of the M808 model used throughout the Human-Covenant War.[3]


Design details[edit]

The M820 Main Battle Tank is similar in most respects to its predecessor, the M808 Scorpion—it is a lightly built, highly mobile weapons platform, utilizing four independently operating tracked bogies for high maneuverability on rugged terrain, and features a low hull profile with a highly placed cannon, with a cuppola pintle-mounted crew-serviced machine gun and room on the bogies for limited troop transport. It differs from the M808 in a number of important ways, however, it is significantly lighter than its 66 ton predecessor—at only 35 tons—and can achieve a top speed of 128.7 kilometers per hour (80 miles per hour), a significant improvement over the M808's top speed of 96.5 kmph (60 mph). However, it does not exchange mass for armor protection, retaining its survivability. More importantly, the new Scorpion is built from the ground up with new technologies and techniques, lacking the Scorpion's deferred technology revisions and historical compromises.[1][2][4]


The Scorpion is outfitted with a 150mm M990 electrothermal-chemical smoothbore cannon, breaking legacy ammo compatibility with its M808 predecessor. Instead, the M820 Scorpion's cannon accommodates both planned cannon-launched guided munitions and future advances in energetic propellants.[2] The variant used by Office of Naval Intelligence security forces uses an experimental ammunition,[3][5] and a variant of the Scorpion currently in skunkworks development by Hannibal Weapon Systems is set to incorporate directed-energy weapons, a laser-firing primary cannon and a Gauss repeater turret.[6][7] The mainline M820 Scorpion is also armed with a pintle-mounted M247T machine gun,[1] alongside a coaxial machine gun adjacent to the main cannon.[Note 1]


Development and operational history[edit]

Following the loss of Chalybs Defense Solutions' facilities on Meridian in 2551, Acheron Security assumed production of the M808 Scorpion. Chalybs introduced the M820 MBT as the successor to the M808 in 2557. Though the M808 continued to serve in UNSC Army and Marine Corps armored units after 2557, the M820 Scorpion began to replace older models after its introduction.[2] By October 2558, the M820 had replaced its predecessor in War Games simulations aboard UNSC Infinity among its Spartan forces.[12]

Chalybs offers a number of variants - UNSC armored units operated the baseline Scorpion, as well as Tundra, Urban, and Woodland variants with camouflage paint schemes and improved armor, while ONI operates its own Scorpion variant for its Security forces which featured superior armor and used experimental rounds to improve lethality. Chalybs also offers a civilian variant of the Scorpion for private military contractors, the Corp Scorpion, which features superior armor to the baseline model. The UNSC contracted Hannibal Weapon Systems to provide an up-armored variant of the Scorpion featuring a directed energy weapon based on the M6 Spartan Laser in place of the M990 turret, and replacing the pintle-mounted machine gun with a Gauss cannon similar to that mounted to Hannibal's up-armored Mantis.

At least one Corp Scorpion was owned by the Liang-Dortmund Corporation and was present on Meridian when it came under attack by Promethean forces in October 2558. Governor Sloan authorized Fireteam Osiris to use the Scorpion to assist his own security forces with the defense of the colony, releasing it from its corporate operator, William Khaleed.[13]

One M820 Scorpion was accidentally caught in the slipspace wake of Guardian 3209 on its way to Genesis, and was encountered by 031 Exuberant Witness during the Battle of Genesis. She offered it to Fireteam Osiris during their mission to meet up with John-117 and the rest of Blue Team at the Gateway.[14]


Halo 5: Guardians REQ cards and variants[edit]

List of appearances[edit]


  1. ^ a b The model of the Scorpion in Halo 5: Guardians has a coaxial machine gun visible, but it is not usable.


  1. ^ a b c d e f g h i Halo Encyclopedia (2022 edition), page 140
  2. ^ a b c d e f g h i j k l m n o p q r s t Halo Waypoint, Scorpion (Retrieved on Apr 21, 2021) [archive]
  3. ^ a b Halo Waypoint, Canon Fodder - A Time to Give Tanks (Retrieved on Jul 14, 2021) [archive]
  4. ^ Halo 5: Guardians, REQ Card: Scorpion Description "Main battle tank armed with a heavy cannon and pintle-mounted heavy machine gun. This new iteration of the storied Scorpion is half the mass of the old M808 yet has nearly identical firepower and armor protection."
  5. ^ a b Halo 5: Guardians, REQ Card: ONI Scorpion Description "ONI spares no expense with its "security" Scorpions, outfitting them with experimental ammunition using the latest energetic propellants. Advanced Scorpion with heavy armor and upgraded cannon."
  6. ^ a b Halo Waypoint, Canon Fodder - Close Quarters (Retrieved on Oct 17, 2021) [archive]
  7. ^ a b Halo 5: Guardians, REQ Card: ONI Scorpion Description "This is but one of Hannibal Weapon Systems' tank test beds fitted with the latest in vehicle-borne directed energy weapons. Advanced Scorpion with heavy armor and fast-discharge laser currently undergoing trials within UNSC Infinity War Games."
  8. ^ Halo 5: Guardians, REQ Card: Corp Scorpion Description "Liang Dortmund's bonded security force is authorized to use a range of milspec hardware to defend remote installations. Rugged Scorpion with extra armor."
  9. ^ Halo 5: Guardians, REQ Card: The Scorpion has always served with the UNSC on every campaign, both on Earth and every extrasolar holdfast that humanity has rooted itself on. Improved Scorpion with extra armor.
  10. ^ Halo 5: Guardians, REQ Card: Urban Scorpion Description "Support package for the Scorpion now being rolled out to Army and Marine Corps units expected to deploy against Insurrection forces in urban areas. Improved Scorpion with upgraded armor."
  11. ^ Halo 5: Guardians, REQ Card: Woodland Scorpion Description "The new, lighter, Scorpion features improved off-road maneuverability and simplifies air transport into remote areas. Improved Scorpion with extra armor."
  12. ^ Halo 5: Guardians, Scorpion in-game vehicles
  13. ^ Halo 5: Guardians, campaign level Glassed
  14. ^ Halo 5: Guardians, campaign level Genesis