Stone Rhino (Behemoth)

Stone Rhino (Behemoth)
Stone Rhino (Behemoth)
Production information
Manufacturer Tokasha MechWorks
Production Year 2847[1]
Class Assault
Cost 10,512,000 C-bills
Technical specifications
Mass 100 tons
Chassis Star League Monster (Standard)
Armor Compound 12A1 Standard with CASE
Engine 300 Standard
Speed 54.0 km/h
Jump Jets Grandthrust Mk. 5
BV (1.0) 2,626[2]
BV (2.0) 3,001[3]


The Stone Rhino was one of the most remarkable surprises sprung upon the Inner Sphere by the invading Clans. Since the Inner Sphere forces knew about the earlier Amaris Behemoth that was the name they gave to the 'Mech.

Originally this 'Mech considered a mistake, the initial design was known as "Amaris' folly". Developed in a project whose objective was to create a BattleMech able to withstand an entire BattleMech company assault, these machines were to be launched into mass production and used to stop General Aleksandr Kerensky in his attempt to retake Terra. The prototype was described as a monstrosity whose leg actuators shut down during its first test run, so the project was summarily scrapped. However, the Word of Blake would use the engineering information for the Behemoth to create the first successful superheavy 'Mech, the Omega.[4]

Mainly seen in Clan Smoke Jaguar, only a small number of these massive machines have been sighted. No other Clan appeared to field this design, but because it is a venerable design, other Clans are suspected to possess some, widely spread throughout their toumans.

Bringing awesome firepower, these machines cannot be used effectively by commanders because they cannot afford to lose one. The Stone Rhino made use of eighteen tons of standard armor. It could jump up to ninety meters in one bound.

Weapons and Equipment[edit]

The design featured Large Pulse Lasers in each arm, twin Gauss Rifles mounted behind flip-open circular firing ports on each side torso, and an almost superfluous Small Pulse Laser located above the cockpit. The Stone Rhino also sported an interesting feature; each arm contained a retractable, shock-absorbing cowl covering the weapon barrels. This allowed MechWarriors to use the arms as battering rams without damaging the weaponry.


  • Stone Rhino
    A Clan Hell's Horses variant made use of two Large Pulse Lasers in each arm and two ATM 9s with four tons of ammo in the torso. Two ER Micro Lasers to protect the 'Mech's rear arc, while the other equipment was removed to add heat sinks.[5] BV (1.0) = 2,795,[8] BV (2.0) = 3,072[9]
  • Stone Rhino
    A variable range variant, the Stone Rhino 4 uses an XL Engine to provide weight savings for four LRM 10s to lay down impressive long range fire. Backing these up are a pair of Ultra AC-10s for mid-range engagements. From there, four ER Medium Lasers provide a solid short range punch. Lastly, four Machine Guns provide anti-infantry support. These combine to make a solid and well rounded configuration. BV (2.0) = 2,601
  • Stone Rhino
    A design based off of early specifications for Amaris's Folly, the Stone Rhino 5 uses a 400XL engine to reach speeds up up to 64.8kph. It is armed with four LB-5X Autocannons mounted in the torsos backed up by six ER Medium Lasers in the arms. BV (2.0) 2,157
  • Stone Rhino
    A close combat design based on the Stone Rhino 5, the Stone Rhino 6 is armed with a simple yet effective loadout of 14 Medium Pulse Lasers. These are backed up by a single ER Small Laser. BV (2.0) = 2,981

Related BattleMechs[edit]

  • Matar - The original failed prototype, the Matar massed over one hundred tons and experienced extreme stresses on its leg actuators that effectively prevented the 'Mech from moving. The project ended when Stefan Amaris had the design staff executed for "treasonous incompetence".


  • Prior to the Battle of Misery, Wolf's Dragoons apparently counted a Behemoth BattleMech in its Alpha Regiment, piloted by a Gordon Zed. This 'Mech presumably used 3025-era technology, but an exact description was never published. Both the 'Mech and its MechWarrior were destroyed on Misery.[10]
  • Captain Jeremiah Rose in a Masakari and Antioch Bell in a Banshee faced one of these on Courcheval. They ended up withdrawing from the fight. They later learn the name of the mech and that the local Clan Nova Cat garrison cluster had "no less than three of the giants, maybe more."[11]

Design Quirks[edit]

The Stone Rhino (Behemoth) has the following Design Quirk:[12]



  1. MUL online date for the Stone Rhino (Behemoth)
  2. Record Sheets: 3055 Upgrade, p. 198
  3. Record Sheets: 3055 Upgrades Unabridged, p. 203
  4. Jihad: Final Reckoning, p. 143
  5. 5.0 5.1 Technical Readout: 3055 Upgrade, p. 120
  6. Record Sheets: 3055 Upgrade, p. 199
  7. Record Sheets: 3055 Upgrades Unabridged, p. 204
  8. Record Sheets: 3055 Upgrade, p. 200
  9. Record Sheets: 3055 Upgrades Unabridged, p. 205
  10. Wolf's Dragoons (sourcebook), p. 51
  11. D.R.T. - James D. Long, Chapters 22 & 27
  12. BattleMech Manual, p. 90 Design Quirk Table - Stone Rhino (Behemoth) Entry.