Production information
Manufacturer StarCorps Industries
Production Year 3061[1]
Model TNS-4S
Class Heavy
Cost 19,339,249 C-bills
Technical specifications
Mass 75 tons
Chassis StarFrame Heavy Endo Steel
Armor Durallex Heavy
Engine PlasmaStar 375 XL
Communications System Garret T-60 FastScan w/C3 & Guardian ECM modules
Targeting Tracking System Garret F22C
Heat Sinks 16 Double Heat Sinks
Speed 86.4 km/h
Jump Jets Audi-Fokker Mark IV
BV (1.0) 1,639 (C3: 156)[2][3]
BV (2.0) 1,844[4]


After producing OmniMechs licensed from the Draconis Combine for several years, StarCorps Industries gained an understanding of OmniMech technology and began designing one of their own. When they finished development of the Thanatos as an OmniMech neither the LAAF or the AFFS was interested in obtaining any new OmniMech designs. The Thanatos was then converted into a standard BattleMech and resubmitted to the two militaries who gladly added it to their arsenals. The Thanatos is intended to emulate the Thor OmniMech used by the Clans. To do this the Thanatos is built on a StarFrame Heavy Endo Steel to save weight and carries a PlasmaStar 375 XL engine that gives the 'Mech a top speed of 86.4 km/h and also has five Audi-Fokker Mark IV jump jets that allow it to jump up to one hundred and fifty meters adding to its mobility. The Thanatos has sixteen double heat sinks to dissipate waste heat from the weapons and it carries thirteen tons of Durallex Heavy armor; compared to other 'Mechs of similar weight however, its protection is relatively light. The 'Mech carries a Guardian ECM Suite to protect itself from electronic warfare systems.[2]

Weapons and Equipment[edit]

The Thanatos is armed to engage an enemy in a variety of situations. For long-range combat, the Thanatos has a Defiance Model 6 ER Large Laser, giving the 'Mech some long range damage capabilities. The 'Mech comes into its own though in the medium to short range brackets as it can bring its Shigunga MRM-20 launcher and two Defiance Model XII ER Medium Lasers to bear. Finally, the single RAMTech 800P Medium Pulse Laser provides highly accurate close range firepower. The 'Mech carries a C3 Slave Unit which dramatically increases its accuracy when it is part of a C3 Lance.[2]


  • THS-4T 
    This Thanatos variant uses a lighter engine that reduces the top speed to 64km/h. It also replaces the extended range lasers with four Medium Pulse Lasers. It also carries the MRM-20, Guardian ECM Suite, and C3 slave of the standard Thanatos, but its main hitting power comes from the LB 20-X autocannon in the left arm. It mounts four jump jets, enough to cover 120 meters at a time. BV (2.0) = 1,760[5]
  • THS-6S 
    This version uses a Light Fusion Engine to provide a top speed of 64km/h. It retains the C3 Slave unit but removes the Guardian ECM Suite. The weapons array has been modified as well. This variant carries a Heavy PPC, two ER Medium Lasers, two Medium Lasers, and three LRM-5 launchers. Six Improved Jump Jets allow it to jump 180 meters. Enough room was opened up for it to carry thirteen double heat sinks. BV (2.0) = 1,936[6]

Custom Variants[edit]

  • THS-4S Thanatos Felix 
    This is a uniquely customized Thanatos that was created by lone Mercenary MechWarrior Felix Grimstead on Swartklip. After expending his MRM ammunition, Felix, with the aid of local Militia techs, had his 'Mech refitted with nine Rocket Launcher/10 Launchers in the right arm. He also had a salvaged Medium Pulse Laser placed into the 'Mech's center torso. BV (2.0) = 2,032[7]

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.

These variants were introduced in various apocryphal sources, and thus far have not appeared in any canonical media.

From MechWarrior 4: Mercenaries:

  • Thanatos XT
    An additional variant of the Thanatos added to MW:4 which was included with MekPak 2. It included a RAC/5, LB 10-X, LB 20-X, and 4 Small Lasers. Additionally the Jump Jets and GECM were removed and replaced with a Laser Anti-Missile System and IFF Jammer.

From MechWarrior Online:

  • THS-4P 
    A small rework of the -4T, the LB 20-X is replaced with an AC-20 fed by 4 tons of ammo, the C3 Slave is removed.[8]
  • THS-5P 
    A 300 rated Light Fusion Engine provides improved survivability. The -5P mounts an LB 10-X Autocannon with 2 tons of ammo in the left arm, an ERPPC in the right arm, and 3 LRM-5s split between the left arm and both torsos with 3 tons of ammo feeding them. The ECM and Jump-Jets remain, with 12 Double Heat Sinks dissipating the relatively cool weapons loadout.[8]
  • THS-5S 
    The -5S' primary weapons are a pair of Light Gauss Rifles with 3 tons of ammo split between the torsos, with 2 ER Medium Lasers in the left arm and an LRM-10 with a ton of ammo in the right arm. A 300 rated extra-light allows these weapons to be mounted, along with the ECM and Jump-Jets, and 13 Double Heat Sinks.[8]
  • THS-5T 
    A dedicated missile boat, the -5T mounts six MRM-10s, two in each arm, and one in each side torso, fed by 10 tons of ammo. This variant is protected by fourteen tons of armor along with Guardian ECM, with a 300 light engine further increasing durability, and four Jump-Jets increase the mech's mobility.[8]
  • THS-HA Hangover 
    Mechwarrior Online's version of Felix Grimstead's custom Thanatos, the only difference is the use of four Rocket Launcher 15s and a Rocket Launcher 10 in the right arm.[1]

Apocryphal Content Ends



  1. MUL online date for the Thanatos
  2. 2.0 2.1 2.2 Technical Readout: 3067, p. 91, "Thanatos 'Mech Profile"
  3. Record Sheets: Upgrades, p. 132
  4. Record Sheets: 3067 Unabridged, p. 148
  5. Record Sheets: 3067 Unabridged, p. 149
  6. Record Sheets: 3067 Unabridged, p. 150
  7. Record Sheets: Unique 'Mechs p. 13, Thanatos Felix - Custom Variant published by BattleCorps website.
  8. 8.0 8.1 8.2 8.3 MechWarrior Online - Thanatos Sale Page