RX-121 Gundam TR-1 ［Hazel］

The RX-121 Gundam TR-1 [Hazel] is a fictional weapon from the Gundam Universal Century timeline.

Appearing in the Advance of Zeta manga, the 121 Hazel is a unit used by the Titans Test Team (T3 Team,TTT) based on the RGM-79Q GM Quel.

RX-121 Gundam TR-1 [Hazel]
The RX-121 Gundam TR-1 [Hazel] is a functional test machine assigned to the Murphy team, based upon the GM Quel. It was equipped with with a Gundam head in order to test its psychological effectiveness against Zeon remnants, though it was actually modified from existing GM-Quel head instead of a true RX-type Gundam head. As it is developed for use in real combat, as well as used as test machine, many of its parts have been replaced with enhancement parts like the new backpack, the movable booster pod attached to it, and the improved thrusters in its legs. As a result, its potential rivals that of an RX type.

Its beam rifle is a prototype version of the energy pack type which the next generation of machines are expected to carry, and this machine has also been used in the development and testing of other devices such as the shield booster. Also, the support actuator units on the Hazel's shoulders can be fitted with either multipurpose launchers, or holding grips to help stabilize its arms while in High Mobility Form. Its skirt armor is usually fitted with energy pack holders which store two energy packs apiece.

The Hazel's most distinctive equipment is the shield booster, which contains propellant tanks and a single thruster with an output of 22,000 kg. This device is a further evolution of the sturm boosters used by earlier mobile suits, but unlike its ancestors the shield booster is retained as a shield after its propellant supply is exhausted, rather than being discarded when empty. The Hazel's Assault Form is equipped with two shield boosters, one on each arm, and its High Mobility Form also carries one on its movable booster pod.

Although the original Hazel's specs are unknown, it spec is probably weaker than Hazel Custom, making its overall specs are probably very similar to those of the RX-78GP01 Gundam "Zephyranthes".

The Hazel was equipped with a Gundam head in order to test its psychological effectiveness against Zeon remnants. Although it has the head of the legendary RX-78-2 Gundam, the mobile suit itself is based on the GM Quel rather than being newly constructed as an RX type. While this machine uses the basic frame of the GM Quel, many of its parts have been replaced with enhancement parts like the new backpack, the movable booster pod attached to it, and the improved thrusters in its legs. As a result, its potential rivals that of an RX type.



RX-121 Gundam TR-1 [Hazel] Full Armor Form
Like the RX-78NT-1 Gundam "Alex" developed during the One Year War, the RX-121 Gundam TR-1 [Hazel] is designed to use a Full Armor system. The Hazel is based on the RGM-79Q GM Quel, with enhancement parts added to each section to give it the high performance of a Gundam-type mobile suit. Of these enhancement parts, the "white parts" of the backpack, rear skirt armor, and leg sections are fixed in place, and only the armor on the front of its torso constitutes a detachable Full Armor system. When this detachable bulletproof armor is installed on the front of its torso, the armor damaged in battle can be easily replaced, which is an advantage in terms of maintenance. However, since the extra armor also increases the machine's weight, it has the drawback of impairing the Hazel's maneuverability.



RX-121 Gundam TR-1 [Hazel] High Mobility Form
The High Mobility Form of the RX-121 Gundam TR-1 [Hazel] is equipped with a total of three shield boosters, one on each arm and one on the movable booster pod attached to its enhancement backpack. When equipped with all its options, including the Full Armor system and the shield boosters, this is also known as the "Final Form." By orienting the thrusters of its three shield boosters in the same direction for maximum acceleration, it can achieve speeds comparable to those of a mobile armor. Holding grips designed specifically for this High Mobility Form can be installed in the shoulders of the Hazel, and it can grasp them to fix its arms in position for stable cruising. This High Mobility Form and its concept of orienting the thrusters in a single direction would have a significant influence on the later development of transformable mobile suits by the Titans.

RX-121-1 Gundam TR-1 [Hazel Custom]
After Lt. Wes Murphy's Gundam TR-1 [Hazel] is heavily damaged in combat with Zeon remnants, it is repaired and improved using a RGM-79Q GM Quel stationed at Konpeitoh and spare Hazel parts stored aboard the Aswan. This "Hazel Custom" reflects the combat data and development know how accumulated by the original Hazel. The machine's enhancement parts, which previously seemed like an afterthought, have been better balanced with the other parts and the machine's internal structure to make it a more complete mobile suit. As a result, its external appearance has a more unified feel, and its lighter weight and increased thruster output give it roughly 10% greater acceleration. A 360-degree panoramic monitor and linear seat system have been installed in its cockpit on an experimental basis, and its operating system has also been upgraded, so this machine's operation is greatly advanced from the original Hazel. The model number of this rebuilt Hazel has been shifted from RX-121 to RX-121-1. Because the Hazel's unique shield boosters were lost in its previous battles, the Hazel Custom is equipped with a normal shield for the time being. The loss of the shield boosters admittedly reduces the Hazel Custom's mobility, but its overall performance increase is enough to make up for this. Due to its redeployment schedule there wasn't time to repaint the machine in Titans colors, so most of its armor remains the grey color in which it was molded.

The Hazel Custom's basic specs, including its generator and thruster performance, are similar to those of the GM Quel. Its leg sections house thermonuclear rocket engines with an output of 17,500 kg apiece, and its backpack is equipped with the same movable booster pod as the original Hazel. The thermonuclear reactor inside this pod serves as both a supplemental generator and a hybrid jet/rocket engine, with an output of 390 kW and 18,000 kg respectively. The Hazel Custom retains the support actuator units and enhancement parts of the original Hazel, and can carry all the same equipment. A multi weapon latch can be plugged into its center skirt armor to support options like a sub arm unit or a flexible beam rifle unit, and another multipurpose latch is located above its cockpit hatch. While the Hazel Custom's High Mobility Form is identical to that of the original Hazel, its Assault Form is equipped with the same booster pod used by the RMS-117 Galbaldy β High Mobility Type, rather than the Hazel's usual movable booster pod. Two shield boosters are attached to this booster pod, and the mobile suit is also equipped with the Galbaldy β's extendable shield.

RX-121-1 Gundam TR-1 [Hazel Custom] w/Icarus Unit
The Icarus Unit is an equipment option for the RX-121-1 Gundam TR-1 [Hazel Custom] based on the concept of unassisted mobile suit flight under gravity. Lacking the ability to transform from mobile suit form to flight form like the NRX-044 Prototype Asshimar TR-3 [Kehaar], this revolutionary system achieves flight through brute force, thanks to the high thrust produced by the powerful thermonuclear jet engines attached to its lower body and the thermonuclear rocket engines in its shoulders. The Icarus Unit's shoulder parts can swivel forward 90 degrees for storage inside the ORX-005 Gaplant TR-5 [Hrairoo], and they have option latches for attaching weapons, shields, or sub arm units. The winglike devices in the shoulder parts function as attitude stabilizers during flight. The waist parts contain a supplemental generator similar to that used in the Hazel Custom's movable booster pod, albeit somewhat larger.

In the early stages of the aerial combat unit development project, the plan was to equip the Icarus Unit with aerodynamic wing units, achieving flight through a combination of thruster power and lift. However, in mobile suit form its aerodynamic characteristics were extremely poor, and it was determined that it would be unable to move freely in three dimensions. Thus the unit's specifications were changed to the current concept of achieving flight through high thrust.



RX-121-1 Gundam TR-1 [Hazel Custom] w/Sniper Unit
A variation of the RX-121-1 Gundam TR-1 [Hazel Custom], this version features the long blade rifle used by the RX-121-1+FF-X29A Gundam TR-1 [Hazel-Rah]. Equipped with one shield booster, this version also features a monoeye visor in place of the standard dual eyes.

RX-121-1 Gundam TR-1 [Hazel Custom] w/Sub Arm Unit
The multi weapon latch in the center skirt armor of the RX-121-1 Gundam TR-1 [Hazel Custom] is designed to serve as a multipurpose joint for various option parts used by the Hazel. This sub arm unit, one of the devices intended to connect to the multi weapon latch, contains secondary arms folded away inside what looks at first glance like extra skirt armor. These sub arms allow the Hazel to carry a beam rifle or other weapons even when both its main arms are obstructed by the attachment of shield boosters. The sub arms can also be used to wield secondary weapons like beam sabers, or to replace energy packs when both main arms are holding weapons. However, the complexity they add to the mobile suit's fire control means they require a high degree of pilot skill, so this system is never widely adopted.

RX-121-1+FF-X29A Gundam TR-1 [Hazel-Rah]
The configuration of the RX-121-1 Gundam TR-1 [Hazel Custom] equipped with the FF-X29A G-Parts [Hrududu] is known as the RX-121-1+FF-X29A [Hazel-Rah]. When attached to the Hazel Custom, the Hrududu functions as a supplemental propulsion device, and active movement of its left and right wing units also produces AMBAC effects, allowing them to act as high mobility binders. The addition of the Hrududu, which also has sub-sensors and additional armor, to the Hazel Custom raises its mechanical performance to a level rivaling that of a second-generation mobile suit. When equipped with the Hrududu's parts, the Hazel Custom's beam rifle becomes a long blade rifle that can be used for long-range sniper attacks. Thanks to the heat blade underneath its barrel, this rifle can also be employed in melee combat.

X-121-1+FF-X29A Gundam TR-1 [Hazel-Rah] Second Form
The RX-121-1+FF-X29A Gundam TR-1 [Hazel-Rah] Second Form is equipped with two units of the FF-X29A G-Parts [Hrududu II]. The Hrududu, developed as a set of enhancement parts for the RX-121-1 Gundam TR-1 [Hazel Custom], is designed to connect not only to its backpack joint, but also to its multi weapon latch and the side armor of its waist section. This form is equipped with a total of four binder-like wing units, and the functions of the upper and lower pairs are standardized, with two thruster wing units on the backpack for propulsion and two claw wing units on the waist to carry and control weapons. The machine's operating efficiency is thus raised to its maximum limit. The Hrududu's nose sensor unit can also be used as a connector for shield boosters. This makes it possible to attach two shield boosters to a single one of the mobile suit's arms. By this point, the Hazel Custom has been repainted in official Titan colors and equipped with the same optical sensor unit and foot thrusters as the RX-121-2A Gundam TR-1 [Advanced Hazel]. The two machines can still be distinguished by their distinctive booster pods, and the fact that the Hazel Custom's waist armor is painted the same dark blue as its chest.

RX-121-1+FF-X29A Gundam TR-1 [Hazel-Rah] Second Form w/Booster
This configuration of the RX-121-1+FF-X29A Gundam TR-1 [Hazel-Rah] Second Form is equipped with the booster used by the ORX-005 Gaplant. By orienting the thrusters of the Gaplant booster, the four wing units, and the two shield boosters in the same direction, it can achieve tremendous thrust. This could be described as a cruising form which places an emphasis on acceleration, rather than general-purpose combat capability as a mobile suit. With the long cruising range and powerful acceleration provided by the Gaplant booster, the Hazel-Rah can perform independent attacks over ranges that would normally be inconceivable. As a result, it can use its acceleration for hit-and-run tactics and carry out special operations such as raiding attacks deep into enemy territory.

RX-121-2 Gundam TR-1 [Hazel II] Early Type
The RX-121-2 Gundam TR-1 [Hazel II] is a RGM-79Q Hazel Reserve Unit stationed aboard the Titans Test Team mothership Aswan for parts exchanges, which has been equipped with a tri booster unit. This tri booster unit is a device with high thrust for use in assault operations, and the plan was to test it with the Hazel, but when the Hazel Reserve Unit is converted to the Hazel II this equipment is used for its main thrusters. However, because the Hazel II was constructed in a hurry, its balance couldn't be considered entirely satisfactory. The designation "Early Type" refers to the machine in the first stage of its conversion from Hazel Reserve Unit to Hazel II, before a crest-shaped sensor unit is installed in its head. The machine's colors are also the same as those of the RGM-79Q GM Quel on which it is based, and it has not yet been painted with the Titans Test Team's characteristic yellow pinstripes.

While its head remains unchanged from the Hazel Reserve Unit, the Hazel II Early Type is equipped with the same backpack and shoulder units as the original Hazel. However, since it doesn't carry shield boosters, its shoulders are usually fitted with multipurpose launchers rather than holding grips. It also lacks the movable booster pod of the original RX-121 Gundam TR-1 [Hazel], since the attachment point is taken up by the tri booster unit.

Tri Booster Unit: A propulsion unit made up of two universal thrusters and a large central sturm booster. The direction of the universal thrusters can be freely controlled thanks to the articulated frame that connects them to the backpack, and this kind of technology will later provide the foundation for the movable frame. Unlike previous sturm boosters, the device used in the tri booster unit is freely movable, enabling it to be used for AMBAC maneuvering. Traces of this technology can be seen in the tail stabilators used by later machines.

After being fitted with the tri booster unit, the Hazel Reserve Unit is redesignated as a combat machine in the military database, and given the Gundam name and RX-121-2 designation as part of the Hazel series. This kind of redesignation normally requires a great deal of time and complicated formalities, but the authority the Titans enjoy within the military enables them to complete the process very quickly. This exceptional redesignation also reflects the strong desires of its pilot Eliard Hunter.

RX-121-2 Gundam TR-1 [Hazel II]
The RX-121-2 Gundam TR-1 [Hazel II] is given a new color scheme when it formally enters service as Eliard Hunter's machine. Its head is also equipped with an enhanced sensor unit like that of the original RX-121 Gundam TR-1 [Hazel]. From this point on, the tri booster unit becomes standard equipment for the Hazel II. Like the original Hazel, the Hazel II can be configured in Full Armor Form. Although Wes Murphy concluded that this armor was too heavy for the original Hazel, the Hazel II can overcome this handicap because it has high output thrusters in the form of a tri booster unit or double shield boosters.

RX-121-2 Gundam TR-1 [Hazel Owsla]
The RX-121-2 Gundam TR-1 [Hazel Owsla] is a version of the Hazel equipped with the Primrose emergency escape pod. The Primrose was developed in order to increase the survival and recovery rates of the pilot and the mobile suit data without reducing the Hazel's performance, but because the Primrose replaces almost the entire chest and torso, this version is called the Hazel Owsla to distinguish it from the normal one. Since the Primrose was designed for high extensibility, the Hazel Owsla can support even more optional weapons and extra equipment functions, and can use various options to adapt to different combat situations.

Like the Primrose, the Hazel Owsla can be equipped with a wide variety of backpacks and optional weapons, including a sub arm unit, the optical sensor unit and leg enhancement parts of the RX-121-2A Gundam TR-1 [Advanced Hazel], the tri booster unit of the RX-121-2 Gundam TR-1 [Hazel II], or the multi connector pod and shield boosters of the Advanced Hazel. Most configurations of the Hazel Owsla carry a long blade rifle, and this machine can also use the Primrose's mega particle cannons and missile pods as built-in weapons. Most Hazel Owsla configurations use the same compact shoulder armor as the RX-121-1 Gundam TR-1 [Hazel Custom] w/Sniper Unit.

RX-121-2 Gundam TR-1 [Hazel Owsla] w/Gigantic Arm Unit
The FF-X29A G-Parts [Hrududu II] which can be attached to the ORX-005 Gaplant TR-5 [Hrairoo] is not just an enhancement part, but can also be used as a connecting platform for a variety of optional equipment. Because all the different optional weapons developed for the TR series were constructed according to a unified standard, their parts can be easily connected and extended. Among the plans under consideration is an armament enhancement plan in which the arms of the MRX-009 Psyco Gundam, a transformable mobile armor developed by the Murasame Newtype research institute in Japan, are attached to the RX-121-2 Gundam TR-1 [Hazel Owsla]. In this version, the Psyco Gundam arms function not only as manipulators but also as attack units equipped with five-barrel beam cannons. Although it uses the arms of the Psyco Gundam, this machine is not equipped with a psycommu system. Another plan under consideration is to attach MRX-010 Psyco Gundam Mark II arms and winch units, which could function as wire-guided remote attack weapons.

RX-121-2A Gundam TR-1 [Advanced Hazel]
The RX-121-2A Gundam TR-1 [Advanced Hazel] is the remodeled RX-121-2 Gundam TR-1 [Hazel II], with leg enhancement parts and a multi weapon latch installed to match its specifications to those of the RX-121-1 Gundam TR-1 [Hazel Custom]. A high-performance optical sensor unit like that of the RGM-79SR GM Sniper III has been added to its head, and supplemental thruster units to the soles of its feet. The movable booster pod on its enhancement backpack has also been replaced with a new type, tested on the RMS-117 Galbaldy β, which can be fitted with two shield boosters to increase its performance still further. The enhanced shield booster has ten diffuse beam guns installed on its surface, which increase the mobile suit's defensive capabilities by shooting down missiles and other projectile weapons. However, the shield booster's propellant capacity is reduced accordingly, giving it lower performance as a booster. All the test results of previous option parts were used in the creation of the Advanced Hazel, which could be considered the current "completed form" of the Hazel.

Testing of the new booster pod with two shield boosters was originally meant to be conducted with the RMS-117 Galbaldy β High Mobility Type. However, this Galbaldy β was lost when Lt Maxim Gunar defected to the AEUG. The tests were thus performed with the Hazel II, and their results are reflected in the Advanced Hazel. The new booster pod lacks the generator and thruster equipment of the previous version, and consists of little more than latches for the shield boosters and an optional propellant tank, acting as a multi-connector pod. Meanwhile, the sub arm unit was also adopted due to the good results of its testing with the Hazel Custom.

RX-121-3C Gundam TR-1 [Hyzenthlay]
The RX-121-3C Gundam TR-1 [Hyzenthlay] is a machine plan in which the know how obtained from the RX-124 TR-6 [Woundwort] is fed back to the RX-121 Gundam TR-1 [Hazel]. As a result, virtually all the RGM-79Q GM Quel parts that remained in the Hazel are replaced by newly constructed enhancement parts. Because it uses the unmodified upper body of the Woundwort high-speed fighter form, its head, chest, and shoulders are very different in shape from those of the Hazel. This substitution is possible because the upper body of the TR-6 is the same size as the Hazel's Primrose escape system. It appears that the TR-6 components are actually installed on top of a RX-121-2 Gundam TR-1 [Hazel Owsla] torso, since the head and chest structures of the Owsla are visible underneath the new enhancement parts. The TR-6 booster pod is likewise connected to the same movable booster pod used by the original Hazel. Finally, the chest and arms of the base TR-6 mobile suit are attached to the waist of the Hyzenthlay as a sub arm unit.