Oddball Infobox-1-
40px-Terminal.png This article, M20 Firefly Multiple Launch Rocket System, was written by Ajax 013. Please do not edit this fiction without the writer's permission.
Firefly MLRS
Production information



Multiple Launch Rocket System

Technical specifications

6.8 Metres


2.9 Metres


2.7 Metres


25.2 Tonnes

Maximum acceleration

67 KPH

Engine Power

V-8 Diesel engine producing 550 horse power


Amalgamated polymer lattice, five layers of alternating titanium and AEGIS plates, coated with extreme temperature resilient Kevlar

Sensor Systems
  • Target Acquisition and Designation System, Driver Night Vision System
  • Motion Trackers
  • Millimetre Wave RADAR
  • GPS
Targeting systems
  • Multispectrum Optical Sensors
    • Optical
    • UV
    • Thermal
    • Night Vision
  • Laser rangefinder
  • SATCOM Uplink
  • Driver
  • Gunner
  • Commander



Necros War


United Nations Space Command


"There's nothing as satisfying in life as watching four of these things carpet bomb an enemy compound."
―Anonymous Marine

The M20 Firefly Multiple Launch Rocket System is a UNSC artillery unit. The MLRS is used to perform mid to long-range artillery strikes against heavily entrenched units, being used more often than not as a barrage weapon for saturating an area with fire. The vehicle consists of a tracked chassis with an armoured cab, carrying the crew and the necessary systems for driving the vehicle, priming and aiming the weapons, and coordinating and remotely operating the weapon system. On the back of the chassis is the self-erecting launcher platform outfitted with two munition pods. These can be set up to carry six Crossbow rockets, with an intermediate range and high damage potential, using high explosive warheads or deadly submunitions, or carry a single Khan Cruise Missile, capable of heavy damage against a precise target, with a wide array of exotic warheads available for it. The Firefly has the full range of accurate targeting system and communication hardware for precise targeting, submunition spread, and fire co-ordination.

The Firefly is often used for two purposes. The first is engaging large armoured formations from long distances, where the common anti-armour submuntions can annihilate multiple targets. The second is for 'grid square removal service', causing devastation to a square kilometre of area, usually used for heavily entrenched enemies in non-strategic positions.

UNSC Remarks

"Not as accurate as the M3 or as long lasting but it does a heck lot more damage in a short time. That, and it frightens the shit outta anybody facing us."

"A battery of these can lay waste to a armoured column, town or army. That's why they are loved so much."

"Personally? I can fire all my rockets, fuck off before counter batteries open then hide somewhere and take half an hour to reload but I'd much prefer to just have a Spam."

Ground Vehicles of the UNSC

Scorpion & Variants
Heavy Tanks

Tiger HBT | Razorback Siege Tank

Grizzly EMBT | Rhino MAAP


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 | Tapir LSV | Ibex MSV | Wildebeast SHSV

Unified Combat Reconnaissance Vehicle

Coyote CRV | Stallion CRV | Bloodhound CRV | Puma ATV | Mustang MGS | Manx MEWS | Boar MC | Ocelot AAA | Bearcat LMC | Salamander HAC

Caracal ICV | Wallaby MEV | Capybara C2V | Chameleon RV | Deerhound FSV

Camel ASV | Bandicoot MLV | Elk REV | Caribou ARV | Moose ABL

Rapid Armoured Carrier

Sidewinder RGC | Adder RRV | Viper RPC | Rattlesnake RAD | Python RATV | Boa RMV | Anaconda MCV | Asp RAV

Personnel Carriers

Springbok APC | Mastodon APC | Mastiff ISV

Bison APC | Bison Ambulance | Bison Command Vehicle | Bison Repair Vehicle

Cougar AFV | Cougar Anti-Tank Vehicle | Cougar Anti-Air Vehicle | Cougar Artillery Vehicle

Crocodile IFV | Crocodile Command Vehicle | Crocodile Recovery Vehicle

Oryx MICV | Hyena CSV | M480 Oryx Battle Command Vehicle | M481 Aardwolf Air Defence System | M482 Oryx Engineering Support Vehicle | M483 Oryx Fire Support Vehicle

Bobcat Command Vehicle


Moa LRW | Wolf ATAAS | Mule Cargo Loader | Mantis ADS | Cyclops HAS | Dragon ABS

Artillery and Anti-Air

Wolverine SPAAA | Bombardier SPMA | Firefly MLRS | Kodiak Heavy Artillery | Racoon HIMARS | Aardvark HAAD | Diamondback MADS

Elephant and variants
Riverine and Landing craft

Swordfish RIB | Pike PB | Walleye PB | Orca LCAC

Naval Craft