RX-77 Guncannon

RX-77 Guncannon

The RX-77 Guncannon is a fictional mobile suit from "Mobile Suit Gundam" anime series, originally designed and illustrated by Kunio Okawara. One of earliest mecha designs in the Real Robot genre, Guncannon's concept of a heavily armored humanoid machine with dual shoulder cannon became the inspiration for various artillery fire-support mecha in other mecha anime and games. The Dankof from Blue Comet SPT Layzner (1985), Dragonar-2 from Metal Armor Dragonar (1987), Schutzwald from the video game series, and other designs owe to the aesthetic of the Guncannon as inspiration for their designs.

Role in Plot

The Guncannon is the second prototype design model that stemmed from the Earth Federation's Project V in the original anime series. It was developed during the One Year War in response to the Principality of Zeon's MS-05 Zaku I and MS-06 Zaku II mobile suits.

The Guncannon was a step up from the RX-75 Guntank; while the Guntank was more a "tank" than a humanoid robot, the Guncannon was a true mobile suit with limbs. However, it did share the Core Block System, using the same FF-X7 Core Fighter. This allowed the Guncannon's pilot to quickly change control with Guntank and RX-78 Gundam.

The first Guncannon was the prototype RX-77-1A Guncannon A, which had poor mobility due to its heavy armor. The second version, RX-77-2 Guncannon, corrected this problem. As defensive weapons, it mounted two 60mm Vulcan guns in the head. However, the Guncannon's primary weapons were the twin 240mm cannons mounted on the shoulders, which were used for the mobile suit's design purpose: mid-range fire support. The Guncannon was also armed with a high-precision beam rifle for sniping operation, being one of the first mobile suit equipped with a beam weapon.

The Guncannon was less mobile but more heavily armored than its cousin, the Gundam. This allowed the Guncannon to be a significant threat to Zeon's Zakus. Unfortunately, the extra armor provided no additional protection against the powerful beam weapons, and heavy projectile weapons (such as the Giant Bazooka used by MS-09R Rick Dom) were also capable of causing severe damage. It also lacked any sort of melee weapon, rendering it having to fight empty-handed during close encounters with an enemy unit. Another disadvantage was that its 240mm cannons only held 20 rounds per cannon, limiting the Guncannon's effective operation time on the battlefield.

During the Zeon attack on Side 7, only one RX-77-2 survived the attack. It was later stationed aboard the "Pegasus"-class assault carrier "White Base" and assigned to Kai Shiden. However, when "White Base" made its way to Jaburo, another Guncannon was transferred to the "White Base" to replace the space-incompatible RX-75-4 Guntank piloted by Hayato Kobayashi. To separate the two units, they were named the "C-108" and "C-109" respectively. Both units were heavily damaged at the final battle of the One Year War at the Zeon's space fortress A Baoa Qu. Kai's Guncannon later reappears in Hayato's mobile suit museum in "Zeta Gundam".

The RX-77-2 Guncannon was the only Project V mobile suit ever to have limited mass-production. It served as a main mobile suit until the Federation introduced the RGM-79 GM; however, due to the high cost of beam weapons, many Guncannon units were armed with conventional machine guns or rifles. Some unlucky pilots were not issued a hand weapon at all, and had to rely on the Guncannon's built-in armaments. In the "Gundam 0079: Zeonic Front" video game, a three-man Guncannon squad was commanded by young, brash Federation pilot, Lieutenant Agar (who would later become pilot of the RX-78-6 Mudrock Gundam). This team would pursue the infamous "Midnight Fenrir" Zeon special operation mobile suit team up to the Battle of Jaburo. Also in "Cross Dimension 0079" video game, at least two Guncannons was used by Albatross transportation team in the Gobi Desert, though game's dialogue said they already loss several units. There were also reports of several Guncannons used to assist the 16th Autonomous Corps, the "Thoroughbred" as well as at least 1 Guncannon used to assist Yuu Kajima during the final days of the "Blue Destiny" [http://en.wikipedia.org/wiki/RX-79_Series] units' test.


RX-77 Guncannon (Manga Version)

The manga features a Guncannon in the same role as the Guncannon in the original series. Like other designs from the original Gundam series, it received a slight makeover by Kunio Okawara; the barrels of its shoulder cannons are longer and there are only 3 fingers on each hand.

RX-77D Mass-production Type Guncannon

The Mass-production Type Guncannon first appeared in "" and was designed by Yutaka Izubuchi.

As the One Year War came to a close, the Federation began plans to mass produce the other machines of Project V. The RX-77D Guncannon Mass-production Type did away with the Core Block System and used the more economical titanium/ceramic composite armor instead of lunar titanium to cut costs. In addition, it possessed additional verniers and thrusters, making it even more powerful and maneuverable than the older model. However, this revision was never produced as planned, with only a few suits being distributed to units such as the "Pegusus" carrier "Gray Phantom" and the White Dingo team in Australia.

MSV Guncannons

The basic model of Guncannon also developed into the RX-77-3 Guncannon Heavy Arms Type, intended to stand on its own. This revision was a simple upgrade of the RX-77-2 with improved armor and armaments. The simple upgrade of the original design was a success, leading to the production of the RX-77-4 Guncannon II. Instead of 240mm conventional guns, the Guncannon II carried a single beam cannon and targeting sensor, making it much lighter and more mobile than previous incarnations. The RX-77-3 Guncannon would show up with other MSV units in Episodes 11 and 12 of "Mobile Suit Zeta Gundam", defending Jaburo from the decending forces of the AEUG. Unlike most of the other MSV units featured in the Jaburo episodes of "Zeta" it would retain its original color scheme.

Both Guncannon Heavy Arms Type and Guncannon first appear as part of Mobile Suit Variations and were designed by Kunio Okawara.

F71 G-Cannon

The F71 G-Cannon, manufactured by Anaheim Electronics, is the first mass-production model derived from SNRI's Formula Project. It was introduced in the early U.C.0120s and was considered both a distant descendant of the RX-77 Guncannon series and a mass-production version of the SNRI's F90S Gundam F90 Support Type. The G-Cannon's primary armament was the pair of large 4-barrel 130mm machine cannons mounted on its shoulders. While intended to be used as a fire support unit, the machine cannons could be removed, leaving the G-Cannon still well-armed enough with Vulcan guns, two forearm-mounted twin-barrel beam guns and a pair of beam sabers, and thus able to maneuver and operate as a good general-purpose/close combat unit. This miniaturized mobile suit largely outperforms the contemporary RGM-109 Heavygun, thanks to its lighter weight, higher reactor and thruster output, and better armaments.

The F71 G-cannon has two other variants. One, the VSBR Type sports two shoulder-mounted variable-speed beam rifles instead of machine cannons. The other variant, the Full Equipment Type, packs even more firepower in the form of missiles, cannons and other weapons.

Designed by Kunio Okawara, it first appeared in the movie "Mobile Suit Gundam F91".


In the original TV anime, only one Guncannon was aboard the "White Base" throughout the One Year War. Instead of a second Guncannon unit, it was accompanied by the Guntank, which served awkwardly in space battles as a long-range fire support unit. The movie version of events is considered more canonical, as it reflects Tomino's decision to emphasize "real robot" elements and downplay or remove remnant influences of the "super robot" genre.


* SD Gundam G Generation F.I.F Perfect Profile's entry on Gucannon, Guncannon Mass Production Type, Guncannon Heavy Arms Type and Guncannon II.
* Super Robot Taisen F's database entry on Guncannon.
* Super Robot Taisen Complete Box's database entry on Guncannon.

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