Production information
Manufacturer Luthien Armor Works[1]
Production Year 3048[2]
Model MAL-1R[1]
Class Assault
Cost 18,399,600 C-Bills
Technical specifications
'Mech type Inner Sphere BattleMech
Mass 90 tons
Chassis Alshain Class 101
Armor New Samarkand Royal Ferro-Fibrous with CASE
Engine Hermes 270 XL
Communications System Sipher Security Plus mk.II
Targeting Tracking System Matabushi SuperSentinel
Heat Sinks 11 double
Speed 54 km/h
BV (1.0) 1,113[3]
BV (2.0) 1,460[1]

The 90-ton assault 'Mech conceived and best known as the Mauler has a particularly convoluted development history, during which it was alternately also known as the Linesman, Nainokami or Daboku at different stages of its evolution.


The standard Mauler is protected with eleven and a half tons of ferro-fibrous armor and has a maximum speed of 54 km/h. Built to engage targets at extremely long ranges, the 'Mech is armed almost solely with long range weaponry. While this left the Mauler vulnerable to rushing by 'Mechs armed with short range weaponry, a skilled MechWarrior can use the range advantage offered to minimize damage to the Mauler while simultaneously causing as much damage as possible to enemy combatants. The 'Mech is particularly unsuited to urban combat where its long range weaponry has substantial difficulty in targeting enemy units.

Design History[edit]

Although now usually associated with the Draconis Combine, who perfected the design and were the first to put it in regular production, the original MAL-1PT5 Mauler was actually created by Earthwerks Incorporated in the Capellan Confederation alongside the Cataphract just prior to 3022.[4] In 3022 and 3023, the six handcrafted Mauler prototypes that Earthwerks had custom-built (one of them the MAL-1PT6 subvariant) were deployed in McCarron's Long March for field testing. They were found to be very effective at long-range support from the sidelines, earning them the nickname Linesman.[4] Two of the prototypes fell on Beten Kaitos and were salvaged by the Federated Suns for analysis.[4]

Despite the overall successful field test, the Mauler project was subsequently abandoned by the Confederation in favor of the Cataphract which fulfilled the Confederation's needs much better, being significantly cheaper, more effective at conventional combat ranges, and easier on logistics. Earthwerks subsequently sold the plans to Luthien Armor Works in the Draconis Combine, where they were filed as Project Nainokami.[4] Following the rediscovery of lost technology through the Helm Memory Core, a think tank of Combine engineers upgraded it with recovered technologies in 3036 and named the upgraded testbed design Daboku.[4] Dabokus were then deployed along the Combine border as early as 3038 with selected DCMS units. When encountering them in the War of 3039, Federated Commonwealth forces were already familiar with the design, which they kept calling the Mauler.

Because the Daboku turned out a design failure suffering from crippling construction flaws, leading to many being captured in the War of 3039, Luthien Armor Works shelved the design and consigned the name to history. For its redesigned successor they would later revert to the name Mauler in order to avoid the stigma associated with the earlier shameful failure. As a result, the Daboku is officially treated as a different, distinct 'Mech design from the Mauler although in reality it was merely an evolutionary stage between the original Capellan prototype from 3022 and the eventual standardized MAL-1R design that was officially unveiled in 3048 and put into regular production.

The Federated Commonwealth had captured a number of Maulers (or Dabokus) over time and deployed these on the periphery fringes of Lyran space.[5] As a result, the Mauler faced the Clans in all invasion corridors when the initial Clan Invasion began in 3050.[4][5] One was piloted by Zachary Miles Hawkins of 1st Somerset Strikers fame, whose role was subsequently showcased in an embellished format in a hugely popular if factually inaccurate holo series. At around the same time, Theodore Kurita authorized the use of the "new" Mauler design as a poster child for a marketing campaign with the newly formed Mercenary Review and Bonding Commission, to announce the end of the Combine's Death to Mercenaries policy.[4] Combined, these media appearances gave the Mauler an outsized presence in the public eye, cementing its fame.[4]

In initial reports (the Technical Readout: 3050), ComStar Adept Merle Jimmus suggested that the MAL-1R Mauler was a new design being tested for production by LAW as of 3052. However, a subsequent ComStar document (the 1st Somerset Strikers sourcebook) referred to Adept Jimmus' earlier report as "less than accurate", pointing out that while Adept Jimmus was technically correct that it was a new 'Mech or at least treated as such by Luthien Armor Works, the design was in truth long past its Daboku prototype stage.

Real world history[edit]

The Mauler's convoluted history mirrors its equally convoluted real world history within the BattleTech setting:

It first appeared in the 1990 publication Technical Readout: 3050 (framed as an in-universe document produced by ComStar) where it was portrayed as an all-new Draconis Combine design as of ca. 3052. In the German edition of BattleTech, the 'Mech's name was given as Nainokami.

However, in the 1994 animated BattleTech series the Mauler featured prominently in a 3050 setting in the hands of Federated Commonwealth pilots. This conundrum was adressed in the 1995 sourcebook adressing the series, by dismissing the earlier Technical Readout entry as "less than accurate" and clarifying that the Mauler had been deployed as early as 3038, with "many" captured by the Federated Commonwealth in the War of 3039.[5]

In 1996, the MechWarrior 2: Mercenaries computer game was released. Set in ca. the 3040s up until the Battle of Tukayyid, it prominently featured the Mauler on the cover (with Hansen's Roughriders insignia) and as part of a Com Guard force in the Battle of Tukayyid in a final cutscene.

In addition, MechForce Germany had published the (apocryphal) LMN-1PT5 Linesman in ca. 1994 through their Life Support magazine, issue #4, where it was described as a prototype precursor to the Mauler built with 3025-era technology and with identical visual appearance; it seems the intention was to give German players a chance at playing the popular design in the 3025 era. Its background lore described the Linesman as an abortive Capellan design that had seen field-testing during McCarron's Long March. The German edition of the Solaris VII Box Set included stats for the MAL-1PT5 Mauler that was essentially identical to the Linesman, and in 2002 the nonfictional German-only BattleTech – Die Welt des 31. Jahrhunderts publication also mentioned it. These German-only sources were not considered canonical though.

In 2009, Technical Readout: 3039 revisited the Mauler by introducing the Daboku as its predecessor, though without mentioning the Linesman or Nainokami. This served primarily to retroactively explain the existence of "Maulers" in the 3030s and early 3040 (as established by the 1st Somerset Strikers sourcebook in 1995), when their technology base would feel anachronistic, by providing a variant with much less advanced technology (in fact, CASE is the only advanced technology on the design).

Shrapnel magazine, issue #15, published in December of 2023, canonized the Linesman and its role in the backstory of the Mauler, establishing that Mauler was indeed the original Capellan name for the 'Mech and MAL its alphanumerical designation from the beginning. A notable deviation from the German publication is that the canonical "Linesman" was just a nickname and the LMN- alphanumerical designation is thus established as non-canon. The article also established "Nainokami" (the name of the Mauler in the German edition of BattleTech) as the initial project name within the Draconis Combine, and on the sidelines canonized the MAL-1PT5 from the German Solaris VII boxed set through the writeup of notable pilot Michael Romney.

The prominent appearance of the Mauler both on the cover of the MechWarrior 2: Mercenaries game and within the game was alluded to by mentioning a joint advertising campaign for the newly-formed MRBC with Theodore Kurita.

Weapons and Equipment[edit]

The Mauler is armed with four Imperator Smoothie-2 Autocannon/2s as its longest ranged primary weapons. Individually, the damage the AC/2s deal is insignificant, but together they can steadily whittle away armor at extreme range. The 'Mech also carries two Shigunga LRM-15 launchers, adding much needed punch to the extreme reach of its four autocannons, and two Victory Nickel Alloy ER Large Lasers for added long range punch.

While the Mauler is outfitted with CASE to protect its vulnerable ammunition bays, its heavily ballistic and missile based weapons complement forces reliance on secure supply lines to properly satiate its weaponry's voracious appetite for ammunition. With a maximum speed of 54 km/h, the Mauler is equipped to stay far back and support faster allies.


  • MAL-1PT5 
    The original Capellan prototype design was built completely from stock Succession Wars era technology. It mounts 12 standard heat sinks instead of double heat sinks, 12.5 tons of standard armor instead of ferro-fibrous armor, and no CASE. Most importantly, it has a standard engine instead of an XL engine. The increased mass of the 270-rated engine only allows for medium lasers on both arms. BV (2.0) = 1,400 [4]
  • MAL-1PT6 
    A subvariant of the original prototype, of which only one was ever built. The engine is downgraded to a 180-rated engine and the weight savings from the smaller engine and correspondingly smaller gyro are used to upgrade the arm-mounted medium lasers to large lasers, and add an additional head-mounted small laser. BV (2.0) = 1,270 [4]
  • MAL-1K 
    This overhaul replaces the lasers with Snub-Nose PPCs. The autocannons were replaced with the same number of light autocannon/5s, along with enough ammo bins to take advantage of special munitions, and armor was increased. It's also fitted with an additional double heat sink, giving this version of the Mauler adequate heat-dissipation capabilities.[1] BV (2.0) = 1,678[6]
  • MAL-1KX 
    An experimental upgrade from the late 3060s that was deemed a failure. It features a Small Cockpit. The lasers in the arms were swapped for a pair of Snub-Nose PPCs, the autocannons were swapped for a quartet of Light AC/5s, and armor was increased to 17 tons of standard armor. The LRM-15s remained unchanged. BV (2.0) = 1,678 [4]
  • MAL-1X-AFFC 
    This variant was created by the Federated Commonwealth from captured Dabokus (underlining how the Mauler and Daboku are fundamentally the same 'Mech). The missile launchers are exchanged for a pair of SRM-4 launchers each. BV (2.0) = 1,286 [4]
  • MAL-1Y 
    A production bottleneck for the then-new ER Large Lasers on the -1R led to this minor subvariant that used the same regular large lasers as the Daboku. BV (2.0) = 1,460 [4]
  • MAL-2R 
    The -2R variant of the Mauler uses relatively new weapons. The standard AC/2s are replaced with Ultra versions, doubling their potential damage. Paired ER medium lasers are fitted in arms formerly housing the ER large lasers. The missile launchers are reduced to smaller LRM-10s. A heavier standard fusion engine is utilized instead of the expensive XL. BV (2.0) = 1,586[7]
  • MAL-2D 
    An evolution from the early 3060s of the -2R variant that upgraded the autocannons to Rotary AC/2s. To make room for this, the missile launchers were changed into MRM 10 launchers. This variant was associated with House Davion. BV (2.0) = 1,745 [4]
  • MAL-3R 
    Introduced in 3062, the -3R variant of the Mauler upgrades the design and addresses the concerns of pilots that used the -1R model. The four Autocannon/2s have been replaced with a pair of LB 10-X Autocannons. The ER large lasers were removed from the design, but the MAL-3R retains the two LRM-15 launchers of its predecessor. Also incorporated in the design is a single Small Laser and a C3 slave unit, the latter of which allows the -3R to use targeting data from units that are closer to the enemy and vice versa. It also has a ninety meter jump capability.[1] BV (1.0) = 1,698 (C3: 202),[3][8] BV (2.0) = 1,877[9]
  • MAL-4R 
    The -4R variant of the Mauler brings the mech up to clan standards. The four Autocannons are the same reliable light autocannon/5s, from the -1K chassis. The ER large lasers have been upgraded to clan grade large pulse lasers. The LRM-15's are also clan grade saving weight and giving the MechWarrior no minimum range. The -4R keeps the inner sphere XL 270 powerplant, the Light Ferro-Fibrous Armor, but the heat sinks have all been upgraded to clan standards and carries a total of thirteen allowing the Mauler-4R to recycle twenty-six points of heat per turn. BV (2.0) = 2,050 [10]
  • MAL-C 
    The -C variant of the Mauler is a modification that was made to the -1R model to allow it to carry a C3 slave unit into battle. This is achieved by removing one ton of autocannon ammunition. This small modification allows the Mauler to share targeting data with friendly units and makes the 'Mech a highly effective sniper.[1] BV (1.0) = 1,133 (C3: 261),[3][11] BV (2.0) = 1,473[9]

Custom Variants[edit]

  • MAL-4X "Todesbote" 
    A custom configuration used by a Lyran Commonwealth criminal, this Mauler variant (named "Todesbote" by the LCAF) replaces the standard weaponry of a Mauler with a single Hyper-Velocity AC/10 in each arm, while the missile racks were replaced by MML-7s. Each autocannon has two tons of ammo while the twin MML-7s use a single ton of ammunition. All ammunition bays are protected by CASE II, and the "Todesbote" is protected by twenty-seven tons of Hardened Armor.[12] BV (2.0) = 1,904[13][14]
    Note: "Todesbote" (German: Harbinger of Death) also happens to be the name of the Awesome BattleMech in the German edition of BattleTech.

Apocryphal Variants[edit]

Apocryphal Content Starts

The information after this notice comes from apocryphal sources; the canonicity of such information is uncertain.
Please view the reference page for information regarding their canonicity.

From MechWarrior 5: The Dragon's Gambit Expansion Pack:

  • MAL-MX90-S 
    A variant of the re-named Daboku exclusive to the Otomo, while the LRM-10 racks are retained the standard Large Lasers are replaced with Extended Range models and the autocannons are exchanged for a trio of machine guns in each side-torso.[15]

From MechWarrior Online:

  • MAL-1P 
    A Mauler variant from MechWarrior Online, the MAL-1P utilizes just about the same weapons, except this version carries a PPC in each arm. It retains both LRMs, downgrading these from the LRM-15s to LRM-10s, and keeps the MAL-1R's four Autocannon/2s. An extra-light 270 engine keeps it moving and eleven Double Heat Sinks keep the heat at bay.[16]
  • MAL-2P 
    Another MWO variant, the -2P should be considered a prototype. Unlike the -1P or MX90, the -2P carries a pair of Lasers in each arm; it's rumored that more than two can affixed if need be. Its twin LRM-10s allow it to send missiles at a greater distance and two Ultra Autocannon/5s give it long to close range support. Both the LRMs and UAC/5s have two tons of ammunition a piece, and like the -1P and MX90, the 2P has Cellular Ammunition Storage Equipment to help protect it from ammo explosions. Eleven Double Heat Sinks and a 270 Standard Engine round out the 'Mech.[16]
  • MAL-MX90 
    The Mauler MAL-MX90 is MWO's version of the DCMS-MX90-D, both carrying two LRM-10s, two Large Lasers and four Autocannon/2 and use a 270 Standard Engine, however, unlike the DCMS-MX90-D, the MAL-MX90 is equipped with CASE which protects the MAL-MX90 from ammunition explosions. It also carries the same amount of Standard Heat Sinks, twelve in all round out the equipment.[16]
  • MAL-KO 
    MechWarrior Online's version of the Mauler piloted by Zachary Miles Hawkins at the time of the Clan Invasion and BattleTech: The Animated Series, the Knockout upgrades the torso mounted missile racks from 15s to LRM-20s and inverts the usual Mauler energy and ballistic placements with an LB 10-X AC in each arm supported by ER Larger Laser in each side torso. Fitted with an 270 XL engine and twelve and half tons of ferro-fibrous armor, Knockout's heavy weapons array comes at the cost of field endurance, mounting only ten double heat sinks, two tons of LB-X autocannon munitions and single ton of LRM missiles.[17]

Apocryphal Content Ends

Design Quirks[edit]

The Mauler has the following Design Quirk:[18]

The MAL-4X Mauler "Todesbote" variant is subject to the following Design Quirks:[12]

Notable Pilots[edit]

See Category:Notable Mauler Pilots

Related Designs[edit]

  • The DCMS-MX90-D Daboku, while not treated as a proper variant of the Mauler, is noteworthy as its immediate predecessor. Although itself a highly unsuccessful design, the Daboku can be described as a prototype that was eventually refined into the Mauler design.


  • In the translated German BattleTech edition by FanPro, the Mauler was officially named the Nainokami, with the FedCom reporting name Schlagetot (roughly "Mauler" or "Slayer", literally "beat-to-death"). The alphanumerical model code was accordingly given as SLT-1R. When Ulisses Spiele took over the German BattleTech license in 2011 they abandoned FanPro's practice of changing the official designations from the US edition, and instead used the original English names for all units.



  1. 1.0 1.1 1.2 1.3 1.4 1.5 Technical Readout: Clan Invasion, pp. 180–181: "MAL-1R Mauler"
  2. MUL online Profile for MAL-1R Mauler - Includes Introduction Date, BV2, and Alpha Strike Data Card.
  3. 3.0 3.1 3.2 Combat Operations, p. 125
  4. 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 4.11 4.12 4.13 4.14 Shrapnel magazine, issue #15, pp. 183-196 - "Technical Readout: The Untold Mauler"
  5. 5.0 5.1 5.2 1st Somerset Strikers sourcebook, p. 77
  6. Record Sheets: 3050 Upgrade, Inner Sphere, p. 257
  7. Record Sheets: 3050 (Inner Sphere) Unabridged, p. 259
  8. Record Sheets: Upgrades, p. 150
  9. 9.0 9.1 Master Unit List: Battle Values, p. 127
  10. Recognition Guide: ilClan, vol. 33, p. 50
  11. Record Sheets: 3060, p. 223
  12. 12.0 12.1 Experimental Technical Readout: Most Wanted, p. 6
  13. Experimental Technical Readout: Most Wanted, p. 19
  14. MUL Profile for the MUL-4X Mauler (Todesbote) - BV2, Intro Date, and Alpha Strike Card.
  15. MechWarrior 5: Mercenaries, The Dragon's Gambit
  16. 16.0 16.1 16.2 MechWarrior Online "Resistance II" Sale Page
  17. MechWarrior Online "Resistance Heroes"
  18. BattleMech Manual Errata (Version 6.01), p. 9: "BattleMech Quirk Table"