The TRV-06k-H Viper II is a playable Virtuaroid featured in Cyber Troopers Virtual-On: Operation Moongate.

General Overview

The Viper II, developed by the eccentric genius Dr. Yzerman, is based on the Temjin's skeletal frame, featuring minimal armor for extreme mobility and speed, but at the cost of combat durability. Designed for swift tactical deployment, this Virtuaroid is highly effective for breakneck speed and aerial combat against sluggish machines. It has a Revenant ver.1.666 multi-launcher in its right hand, which can be used to fire a full-auto beam vulcan gun or a seven-way spread of missiles. In melee, the multi-launcher can even act as a beam saber. It also has a BL-c04 beam launcher in its chest that fires a homing beam.

Development History

Development of the Support VR

In the early days of Virtuaroid development, there were only two distinctive concepts; the Main Battle Virtuaroid (MBV) and the Support Attack Virtuaroid (SAV), which were originally imagined to fulfill the roles of base defense and suppression weapon systems. The Raiden was initially slated to be an SAV. While its firepower and performance exceeded expectations, its manufacturing costs, as well as the intended weaponry, made mass production exceedingly difficult. Because of this, the DN Corp.'s squadron concept based on the SAV proved to be nigh impossible, thus they hastily commissioned the development of an alternate SAV and the TRV (Tactical Reconnaissance Virtuaroid). The SAV-07 Belgdor has the former covered, while the TRV-06 Viper series was ideal for the second role.

Tactical Reconnaissance Virtuaroid (Role)

In an offensive concept, the tactical reconnaissance role is a step-up above traditional armed reconnaissance. It was assumed that in a VR squadron, the MBV-04 Temjin would be the core strength behind it. The bad news was the Temjin would not be viable in high-mobility combat, leading to a change in circumstances beyond conventional wisdom. Thus, to achieve maximum combat efficiency, even at the current moment on the battlefield, a continuous supply of real-time information was vital.

At that time, one-on-one data transmission between Temjin units naturally came with large-scale reconnaissance action to maintain field balance. Because such activities occurred concurrently, this would require practice with the Temjin. Alternatively, a reconnaissance unit with mobility that exceeded the MBV is what was truly needed. Acquisition of aerial mobility (with jumping) far surpassing that of the Temjin was especially effective for maintaining field balance.

However, the possibilities presented by collaborative efforts with MBV units that were always caught up in the conflict couldn't be underestimated, along with the fact that the tactical reconnaissance unit would also be in the heat of battle. Good offensive capabilities would be demanded, especially for the TRV, since its armor would be sacrificed for the sake of higher mobility. *Combat methods for finishing the fight, such as pushing the envelope is not favorable. Naturally, armaments optimized for a breakaway attack are needed.

(*: Sentence's exact wording not entirely accurate due to differing translation results from Google Translate and the Bing Translator)

TRV-06 Viper

Designing a new frame for the TRV role was not ideal and would have been far too expensive. Because of this, the DN Corp. had no choice but to use the Temjin's skeleton system combined with the basic design of the XMU-06 in the TRV's development plan. At the time, improving on the TRV's mobility performance was of paramount significance.

First off, the required tasks was to enhance the capacity of the generator amplifier so that the generator's power output would be comparable to that of the Temjin. This was expected to bring the Virtuaroid's mobility and agility to unprecedented levels. The next step was that of defense. The TRV's armor plating was made in the minimal required level, with its ballistic resistance being described as "paper-like". While this boosted the TRV's mobility and agility, it would mean that only foolhardy or veteran pilots would deem the machine viable in a true combat scenario. (However, the Viper II was, and is still, a force to be reckoned with when operated by experienced personnel).

Thus, the XTRV-06 was born, boasting mobility and agility exceeding that of the Temjin. It had surpassed all expectations in its performance tests with varying results and with not much trouble, gaining the satisfaction of DN's stockholders alike. From there, the new TRV was given the name "Viper".

The Accident: "She's Lost Control!!"

In V.C.0097, a terrible event had occurred during a test flight of the Viper prototype, wherein the pilot had lost his life following a horrific crash.

Visual material had shown that the Viper had disintegrated, making evidence as to the cause very scarce, rendering the investigation all but impossible. Fortunately, the survey team had found only one item at the wreck: a voice recorder. This caught the interest of various people. Subsequent analysis of the data found in the device was a recording at the time of the accident where the pilot screamed his last words, "She's lost control!! Out of control!!"

It was believed that perhaps the Viper's control system had somehow malfunctioned, leading to the Virtuaroid going haywire before it crashed and burned. In order to confirm this suspicion, significant research and testing had continued, during which there was substantial speculation.

The cause of the accident was determined to be structural in nature. In order for the Viper to possess its distinctive extreme mobility and agility, its generator was mated to a large-capacity amplifier. However, this would place heavy strain on the Virtuaroid's structural integrity and the control system. For Virtual-On Positive (VOP) pilots, the output skyrockets to levels that far exceed expectations. At the time of the accident, there was a left-over amount of energy that couldn't be processed by the generator, so when the test pilot had attempted to use it, it destroyed the control system. This led to the Viper becoming uncontrollable and self-destructive, resulting in the crash that had destroyed it.

The cruel fact was that this problem was anticipated from the very beginning. However, this had haunted the VR's unreasonable development schedule in that regard due to an incomplete limiter configuration. Because of this, calls were made by DNA to develop immediate countermeasures for this design flaw at the plant side.

TRV-06k Viper II

The Viper revealed a fatal flaw that resulted in its temporary disuse. However, the prospect of an alternate model was notwithstanding, as the need for the TRV was made keenly aware of.

The first correspondence would be a partial renovation of the Viper. Despite this, results due to work issues wouldn't be ideal. Renovation work on the Viper would require a drastic and radical policy change, especially with replacing the F-type by the development staff. At the same time, the service code was changed to TRV-06k.

Under the new policy, the Viper's structure was thoroughly reviewed and given enhancements. Autonomous Thermal Plate Binder wings were attached to the back, along with structural reinforcement work adding to the weight and a changed appearance. For this reason, in V.C.009b, the Virtuaroid was re-designated "Viper II".

S.L.C. Dive

The Viper II was formally adopted in V.C.009d. Its performance is rather inferior to the original Viper due to the extra weight, but the improved stability was worth the cost. On the other hand, it cannot be disregarded that the Virtuaroid is also capable of a special maneuver: the so-called "S.L.C. Dive".

The Thermal Plate Binder system on the Viper II's back were not intended to generate lift but to provide high-efficiency heat dissipation due to the high mobility. Practical observation, though, had seen a peculiar behavior from the previous VR for its V-Converter, referred to as "autonomous exothermic reaction".

To elaborate on heat transfer principles, the nature of the binder plates' enhanced heat dissipation was not entirely explicit. When a thermal binder plate made of a specific material is deployed along with the V-Converter, the heat dissipation is empirically enhanced. The Viper series is the first VR to be equipped specifically for this particular phenomenon.

During the transition to the Viper II model, the Thermal Plate Binders were originally to be removed. When the autonomous exothermic reaction is enhanced by the binder plates, this placed a heavy mental burden on the pilot via feedback action through the Mind Shift Battle System.

However, at a later time, the binder plates had to be positively reinforced in order to resolve the S.L.C. phenomenon of the Viper. The excess energy from the amplifier's overdrive state was to be deployed through the binder plates to the Virtuaroid's outer periphery to create a spindle-like energy field. During this time, the VR loses control, but since inertial flight towards the target being locked in is possible before this, its body shifts to a diving ramming attack, much like the kamikaze maneuver frequently employed by Japanese air force pilots during World War II.

The potency of the S.L.C. Dive's energy field proved to be great, more so than with the VR's armaments. However, this did not thoroughly solve the problem, as the excess energy from the amplifier did not dispel completely even after constant repairs and renovations.

As what would potentially be a sick joke or in honor of the fallen test pilot of the original Viper from that fateful accident, the Viper II's devastatingly powerful maneuver would be given its name.

Gameplay Strategies

As Viper II

  • A back-dash 7-way missile releases a cluster. If all get destroyed, before Viper II's dash expires, the robot will loose a second pack. Free of charge! And yes, this happens even when the weapon gauge is depleted!
    • Outside of the aforementioned circumstance, the missiles will only be fired in a single cluster.
  • Because CC attacks do little damage, wait for an enemy to come close and guard. Fire the Homing Beam right into his face when he does!
  • The signature move of the Viper II, the S.L.C. Dive empties all of its weapon energy to its Thermal Plate Binders to perform a devastating homing dive, swooping down on an opposing VR. Another benefit to the maneuver is that the Viper II is invincible for the duration of the move. Once the dive is finished, however, the Viper II would be left completely vulnerable, as all of its armaments would have to be recharged before use. Performed correctly, it would cause even the heaviest-armoured Virtuaroids to suffer critical damage, while leaving the Viper II practically invulnerable. If it was executed by incompetent pilots, however, it would transfer this heavy incapacitation to the TRV itself.
    • How to perform: Jump in the air, wait for it to almost expire and then hold both Twin-Sticks forward while pressing both weapon triggers. (Jump + Both joysticks forward + CW)
    • Strategy: It is best performed at a short range. Activate it too closely to an enemy and it wouldn't cause any damage at all. If your opponent performs a jump-cancel while you use the dive, it also wouldn't cause any damage, but in both cases, you would also be helpless once the dive is finished.

Against Viper II

  • When playing as Dorkas against this VR, take note that the hammer can be deflected by Viper II's homing beam, though it can stop you from being hit by the latter. But, if you do use the hammer against Viper II and it doesn't fire a homing beam, it is especially effective, particularly when knocking it out of the air.
  • If the Viper II is performing the S.L.C. Dive, perform a jump-cancel and it would cause no damage, leaving him open for attack, unless he manages to react quickly enough for a get-away and recharge his weapons.


  • XMU-06-A Viper I ver. α (XTRV-06): The earliest version of the original Viper, whose design aspects had some deficiencies compared to the Viper II, due to the forced reusage of the Temjin's skeleton system.
  • TRV-06-E Viper I ver. β: It is the XTRV-06 prototype repaired and renovated for the purpose of observing the S.L.C. phenomenon in order to determine a solution for it.
  • YZR-540-SH Viper 540 SH: A variation of the Viper series developed by Dr. Yzerman at the Sixth Plant "Satchel Mouth" (SM-06) as a test bed for a revolutionary transformation mechanism. The VR would be equipped with a flight unit in Proto Thrasher Mode, and for Virtuaroid-on-Virtuaroid combat, it would abandon the flight unit and transition into VR Mode. However, the Viper 540 SH could not truly change between VR and Proto Thrasher Modes, for at the time, the transformation mechanism was still undergoing testing. This motivated Dr. Yzerman to try and develop a working built-in transformation mechanism into a Virtuaroid's frame, in spite of FR-08's attempts to discourage VR development, leading up to the RVR-42 Cypher. Several Viper 540 series prototypes were also purchased, the most notable of which were the modified RVR-40/540 TGS TGS-Viper "Evelyn" and RVR-40/540 TGA TGA-Viper "Charlotte" VRs, piloted by Deborah Bite and Jennifer Poison of the Rose Sisters, respectively. Featured in One Man Rescue, it was also used to remotely control the SDK/04 Shadow 04.
  • RVR-40/540 TGS TGS-Viper "Evelyn": By V.C.a3, the RNA-controlled SM-06 had not produced the RVR-42 Cypher in sufficient quantities, that which was caused by production delays. As a result, several prototype Viper 540 series Virtuaroids were purchased in the interim by a select few pilots and are re-tooled for combat. Flight Lt. Deborah Bite's machine, nicknamed "Evelyn", featured enhanced booster output, leading to more powerful S.L.C. Dives. Along with that, the Proto Thrasher Mode is also armed with several TAG-18/AVR multi-purpose missiles and a UB-40 Shell Pod with an on-board cluster bomb system. In short, Evelyn is oriented towards higher offensive capabilities, reflecting its pilot's aggressive nature in battle. It is considered a one-of-a-kind machine according to passengers. Featured in Fragmentary Passage.
  • RVR-40/540 TGA TGA-Viper "Charlotte": "Charlotte" is also a modified Viper 540 series prototype, tailored to the personal specifications of Flight Lt. Jennifer Poison. Unlike Deborah Bite's Evelyn, Charlotte is developed for the traditional tactical reconnaissance role of the original TRV-06 series with enhanced mobility and speed in Protoslasher Mode. It featured high-processing sensory equipment, Spandau blocks mounted on the fuselage for increased durability, and dual Revenant ver.1.8 multi-launchers, which could be used in both Proto Thrasher and VR Modes. It is also considered a one-of-a-kind machine according to passengers. Charlotte's sensory equipment was vital in the Rose Sisters' mission to track down Ajim. Featured in Fragmentary Passage.


  • No other Virtuaroid since the first generation has used the TRV prefix in its model number.
  • This VR's background music is named after the full name of its signature move.
  • The Viper II is considered the lightest, or one of the lightest, Virtuaroids in the game, thanks to its designation of tactical-reconnaissance. Conversely, it is traditionally considered the weakest Virtuaroid defense-wise, easily damaged if not outright destroyed by stronger attacks such as Raiden's standing CW.
  • The Revenant Multiple Arm Launcher ver.1.666's name comes from the term for an animated corpse that is believed to have revived from death to haunt the living. The word revenant is derived from the Old French word, revenant, meaning "returning". It may also be a reference to how the original Viper VR has "returned" as the Viper II.
    • The version number of the Viper II's Revenant has 666 in it, referring to the Number of the Beast as described in the Book of Revelations in the Holy Bible.
  • As with the Temjin, the Viper II, when firing the Revenant's Beam Vulcan, ejects spent bullet casings despite being a directed energy weapon.
  • The Viper II's successor model, the RVR-42 Cypher, replaces its 7-Way Missiles with Cold Daggers. While the Cypher's successor model, the YZR-8000 Δ Myzr Delta also uses these energy daggers, its second variant, the YZR-8000 H Myzr Eta uses the missiles originally used by the Viper II.
  • It is the only Virtuaroid which has both a letter and a number in the middle of its model code.
  • The XMU-06-A Viper I ver. α makes an appearance in the manga, Cyber Troopers Virtual-On: Scrambling Concerto.
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