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RGM-90 Double Zeta Gundam Platoon Leader Mobile Suit (RGM-90B, -010E)

I. Dimensions

Total Height:  22.11 meters 23.14 meters 23.14 meters
Total Depth : 8.8 meters 8.9 meters 9.5 meters
Total Breadth : 5.5 meters 5.7 meters 6.2 meters
Dry Weight : 16.4 metric tons 16.4 metric tons 22.7 metric tons
Operational Weight : 34.2 metric tons 35.8 metric tons 47.3 metric tons

II. Type

III. Service Use

IV. Propulsion



(RGM-90E, -90FA)



(RGM-90E, -90FA)

Fuel Capacity:


(RGM-90E, -90FA)

V. Performance

Running speed: 206 kph 198 kph 148 kph
Max loiter time: 440 seconds 500 seconds 380 seconds
Jump distance:(*) 320 meters 350 meters 250 meters
Cell duration:(**) 100 hours 100 hours 20 hours
Acceleration: 3.0 G 3.5 G 2.6 G
Delta-v capacity: 222.6 kps 262.4 kps 173.6 kps
* = Earth-normal conditions and without thrusters
** = Continuous operational use.

VI. Electronics

Radar tracking:


(RGM-90E, -90FA)

Optical tracking:


(RGM-90E, -90FA)

Tactical Electronic Warfare System (TEWS):


(RGM-90E, -90FA)

VII. Armament



Hand Held Weapons:

Beam Saber





Other Military Cargoes available include:

VIII. Armor

The armor on the RGM-90 is a low-mass lunarium titanium composite plating that is the standard for command mobile suits known as Gundarium. Aside from the superb protection provided against projectiles, missiles, and other kinetic weapons, this armor is also fairly resistant to plasma globes (annihilation discs), lasers, and to a lesser extent, particle guns too, owing to the fact that the armor can flake off and evaporate in layers under fire from such high-energy weapons, taking much of the weapon's energy and converting it into the latent heat of sublimation in the armor. The armor stops all small arms fire, and has good resistance to all weapons commonly mounted on combat mecha. This new armor is also much lighter than most armors weighing a full two thirds less than the traditional armor's mounted on mecha but is almost twice as expensive to make.

The Double Zeta Gundam provides full protection from nuclear, biological, and chemical hazards, using an overpressure cockpit environment activated by radiation and hazardous chemical sensors, or manually when biological warfare conditions are anticipated. The internal consumables supplies can provide atmosphere for three days maximum.

IX. Development

Following the successful deployment of the RGM-84 Gundam Zeta, engineers at Anaheim once again went back to the drawing board in attempt to provide more robust versions of the RGM-84.  After four years of design, they arrived at the early concept for the RGM-90 Double Zeta Gundam.  This mobile suit would be based on the Gundam Zeta and feature far superior fire power than its predecessor.  One of the limitations of the Gundam Zeta was its short battlefield endurance in terms of missile combat.  The Double Zeta attempted to solve this problem by adding yet more missiles for a total of 42 scattered across the mobile suit.  The biggest upgrade for the Double Zeta Gundam however was in terms of the cannon firepower.  The suit uses a double barrel beam rifle which, while delivering a smaller blast, can fire more rapidly allowing the suit to lay down tachyon suppressive fire pinning enemies to the ground.  The suit also refined the large tachyon cannon used by the MSZ-006.  The end result of the study yielded the TC-10 tachyon cannon.  This cannon, while delivering less firepower than its cousin, was carried internally so as to be more flexible in combat and can fire at an increased rate of fire making more than just a stand off defensive weapon. 

These features were coupled with a superior thrusters and generators which allowed the RGM-90 to achieve much greater space combat performance as well as improved atmospheric combat capacity.  In 2060 the RDF Marines and Space Marines approved production to replace all of the RGM-84C units in use and designated for platoon leader use.  The first RGM-90 Double Zeta Gundam reached the front lines in late 2060.  Do the delight of both the pilots and Anaheim, the mobile suit performed beyond expectations leading to increased production beginning in 2061. 

The mobile suit first saw heavy combat during the 4th Robotech War where it proved its value being able to take on both mecha and capital ships being able to effectively defeat both, limited only by the fact that nine times out of ten, they were outnumbered.  In 2064, Anaheim issued field upgrades to all Double Zeta Gundams.  These upgrades replaced the thrusters with more powerful models boosting performance even higher, this helped to offset the additional armor at key vital areas as well as increased missile payload from 42, to 72.  The Enhanced ZZ Gundam as it became known also was compatible with the new GBP-12 system as described below.

The final version of the Double Zeta was a return to the Full Armor systems as seen on the original RGM-78.  These full armor packs increased the damage capacity tremendously allowing the suit to take a full volley of Dagger missiles (48) and survive(!).  The Full Armor ZZ Gundam is a behemoth in combat.  Carrying over 100 missiles of varying sizes and an additional large tachyon cannon, the FAZZ as its lovingly called by its pilots, can inflict massive damage against even well equipped numerous foes.  The final piece of the FAZZ's frightening weapon systems is the ML-05.  A refined version of the ML-03 used on the Zeta Gundam the ML-05 isn't quite as large, but packs an even larger punch.  Carrying its own independent RRD-5 onboard reactor gives the cannon the ability to recharge in the field and be used continuously throughout a battle.  The refiring rate is still very slow, but with the weapon now able to be carried easily this is no longer a drawback, simply store the weapon while recharging and use any of the FAZZ's already present weapons.  The mobile suit did however suffer from a decrease in mobility and speed as the armor system added little in the way of engines relegating the suit to defensive sorties.  This was a serious drawback during the 4th Robotech War and plague the suit throughout its life.  It began limited deployment due to these features and an enormous cost, almost as much as an entire platoon of mobile suits.  It first entered service in 2065 with the RDF Space Marines.

Throughout the remainder of the war, the RGM-90 saw service in all roles and on all fronts and performed above and beyond the call of duty an many occasions.  The RGM-90 was withdrawn from service in the years following the war in favor of the RGM-99 series Gundam.

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Robotech (R) is the property of Harmony Gold. This document is in no way intended to infringe upon their rights.

Layout adapted from Robotech Reference Guide

Content by Jeffrey R. Spillner and Ron Ferrara
Copyright 1998-2001 Jeffrey R. Spillner, Ron Ferrara

Page Last Updated on December 14, 2001 @ 00:00 GMT