Gundam F90 — Complete Guide— Pioneer of the Miniaturized MS Era

What Is Gundam F90? — The "Little Gundam" That Changed Everything

Universal Century 0111. Until that point, mobile suits (MS) had a standard height of around 18 meters. The RX-78 Gundam from the One Year War stood at 18.0m, the Zeta Gundam from the Gryps Conflict at 19.85m, and the Nu Gundam from Char's Counterattack at 22.0m. With each new generation, mobile suits grew larger, more complex, and increasingly expensive.

Gundam F90 shattered that convention head-on.

Standing at just 14.8 meters tall — over 3 meters shorter than conventional MS — this machine was born from the revolutionary concept of "becoming stronger by becoming smaller." Miniaturization reduced the target profile, weight reduction dramatically enhanced maneuverability, and with 26 interchangeable "Mission Packs," a single unit could adapt to any battlefield scenario. F90 was a revolutionary machine that overturned every assumption about mobile suit design.

This small Gundam would later give rise to the Gundam F91, star of the theatrical film Mobile Suit Gundam F91, and eventually lead to the Crossbone Gundam F97 of Mobile Suit Crossbone Gundam — making it the progenitor of SNRI's entire mobile suit lineage. From UC 0120 onward, as 15-meter-class MS became the new standard, it was F90 that had started this tidal shift. It was, in every sense, the pioneer of a new era.

Basic Specifications

Reading Innovation Through the Specs

The most striking figure is the base weight of 7.5 tons. The RX-78-2 Gundam from the One Year War weighed 43.4 tons. F90 achieved a weight reduction to less than one-sixth of its predecessor. Despite this, its generator output of 3,160kW surpasses the Nu Gundam's 2,980kW, and F90 holds an overwhelming advantage in thrust-to-weight ratio as well.

The technology that made these extraordinary specs possible was the Micro Honeycomb Technology developed by Yashima Heavy Industries (an Anaheim Electronics subsidiary). By utilizing Minovsky particles to form microscopic honeycomb structures, this revolutionary armor material achieved equal or greater strength at 30% of conventional thickness. F90's armor was ultra-thin, ultra-light, yet incredibly robust — one of the core technologies that underpinned the Formula Project's concept of "returning MS to their origins."

However, miniaturization came with risks. The compact high-output generators created a possibility of nuclear explosion if struck directly by beam weapons. This was a fate shared by the later F91 — an inherent vulnerability of miniaturized MS.

The Formula Project — The Background Behind F90's Creation

SNRI's Challenge

In the UC 0100s, the MS development market was essentially monopolized by Anaheim Electronics. Having absorbed the former Zeonic and Zimmad companies after the One Year War, Anaheim held near-total control over the Federation's MS procurement, and with each generational shift, MS grew larger and more expensive.

S.N.R.I. (Strategic Naval Research Institute) disrupted this status quo. Under the concept of "returning to the origins of MS," SNRI launched an ambitious project aimed at "miniaturizing without sacrificing existing performance" — the Formula Project.

The Development Team and Technological Innovation

The F90 development was led by the following members:

• Job John — A veteran engineer known as a former White Base crew member from the One Year War
• Almayer Guggenbiger — Chief Designer who shaped the core design philosophy of F90

The team introduced three revolutionary technologies for miniaturization:

1. Micro Honeycomb Armor — Ultra-lightweight, high-strength armor utilizing Minovsky particle applications
2. Compact High-Output Generator — A dual-generator system adapted from orbital racer engines
3. Hardpoint System — Standardized equipment connection points distributed across the machine's body

The Hardpoint System in particular would become the foundation for connecting 26 different mission packs, defining F90's greatest characteristic.

Victory at the Competition

In September of UC 0111, F90 was completed. The following year, in UC 0112, at the Federation's next-generation mainline MS selection competition, F90 faced off directly against Anaheim Electronics' entry, the prototype MSA-120.

The result was a decisive F90 victory.

Overwhelming maneuverability from its compact lightweight frame, mission adaptability through Mission Packs, and superior cost performance — F90 outclassed the MSA-120 in every category, claiming the position of next-generation mainline MS and shifting MS development leadership from Anaheim to SNRI. In that moment, a new page in Universal Century MS history was turned.

Armament — Simple Yet Refined Standard Equipment

F90's standard armament was designed to deliver high combat capability even in its "bare" state without Mission Packs equipped.

The Design Philosophy Behind the Standard Armament

F90's standard armament was intentionally designed to be "simple." Head vulcans, beam rifle, beam sabers, shield — this is essentially the same loadout as the original RX-78-2 Gundam.

Why? Because it follows F90's design philosophy of "eliminating all structural elements unnecessary for basic operations." In its bare state, the machine carries no excess equipment and maximizes its inherent maneuverability. All specialized equipment for specific missions is externally attached via Mission Packs — this disciplined design approach is the core of what makes F90 a "universal machine capable of adapting to any situation."

The Hardpoint System

F90 features 12 hardpoints (equipment connection points) distributed across its body:

• Shoulders × 2
• Arms × 2
• Front Skirt × 2
• Side Skirt × 2
• Rear Skirt × 1
• Legs × 2
• Backpack × 1

These hardpoints are far more than simple physical mounting points. Energy supply, Fire Control System (FCS) integration, targeting and trigger commands — everything is automatically integrated through the hardpoints. Develop a new weapon, connect it to a hardpoint, and it's immediately operational. This "plug and play" philosophy is what enabled the deployment of 26 different Mission Packs.

Mission Packs — One Gundam, 26 Faces for Every Letter of the Alphabet

The greatest feature and greatest appeal of Gundam F90 is its Mission Pack swap system.

From A-Type to Z-Type, Mission Packs were designed for every letter of the alphabet. Each pack's name is taken from the initial letter of an English word describing its purpose. This was SNRI's grand project to "verify the evolutionary directions for next-generation MS" — an unprecedented attempt to test 26 operational patterns using a single prototype.

Complete List of All 26 Mission Packs

Notable Mission Packs

V-Type (Vesper) — The Bridge to F91

The most important of all Mission Packs is the V-Type. It carries a prototype V.S.B.R. (Variable Speed Beam Rifle) — a revolutionary weapon that adjusts beam velocity, enabling shots ranging from armor-piercing to high-destructive depending on the situation. This innovative armament would become the signature weapon of F91.

Without the V-Type's test data, F91 could never have been born — that is how decisive this Mission Pack's role was in the Formula Project lineage. Note that when the V-Type is equipped, most generator output must be diverted to the V.S.B.R., preventing simultaneous use with other Mission Packs.

A-Type (Assault) — The Dream of Independent Long-Range Strike

Equipped with a Minovsky Craft unit enabling independent long-range assault operations, the A-Type represented a technological triumph of fitting this large-scale equipment onto a 15-meter-class miniaturized MS. It was among the first packs to receive MG plastic model treatment in the "F90 A to Z PROJECT" and remains one of the most popular configurations.

N-Type (Next) — Encounter with Newtypes

The N-Type, which achieves combination transformation with the fighter craft "Hal Fighter," was developed as Newtype-use equipment but never reached full completion. However, designed to work in conjunction with Unit 3's TYPE-K.B computer, this pack became a technological wellspring that led to the later conversion into the Cluster Gundam.

Type 8000 Neuro-Computer — The Digital Brain Housing Pseudo-Personalities

Another innovation of F90 was its Type 8000 Neuro-Computer. This non-von Neumann fifth-generation computer, housing over one million synapse processors, constructs "pseudo-personalities" from past combat data and simulations to support pilot operations — an extraordinary system for its time.

Three Pseudo-Personality Operating Systems

The pseudo-personality OSes installed in the F90 units were each constructed using combat data from real ace pilots as their models.

TYPE-C.A's performance characteristic of "three times normal speed" strongly suggests who the pilot model was. The "Red Comet" whose name echoes through Universal Century history — Char Aznable's combat data was almost certainly the base.

It should be noted that in the story, Captain Bosch (commander of the 13th Experimental Corps) described this pseudo-personality computer as an "act of the devil," and the ethical debate over mechanically replicating human capabilities serves as one of the narrative's central themes.

Def Stallion — The Old Type Who Proved His Own Strength

Character Profile

Def Stallion, pilot of F90 Unit 1, was a test pilot affiliated with SNRI. His rank was Ensign.

Def's background is remarkable. During high school, he swept every award at the Junior Mobile Suit Championships, and while still a student, he competed in MS races against adults. This talent earned him selection as a test pilot for SNRI's Second Formula Project.

Philosophy — "MS Are Cool, but People Dying Isn't"

Def was a weapons enthusiast with a particular fondness for mobile suits from the UC 0079 era (One Year War period). Yet at the same time, he held the belief that "MS are cool, but people dying isn't cool." He was a pacifist at heart.

Having lived in space with his father as a child, Def experienced rejection by his mother on Earth. This trauma drove him to pursue MS piloting skill as "his own power" — for him, piloting a mobile suit was a way to prove his own worth.

Technical Philosophy — Resistance Against Computer Dependency

Def harbored deep skepticism toward reliance on F90's cutting-edge pseudo-personality computer. His philosophy that "the skills a pilot develops through their own effort" are what truly matter, and that individual pilot ability should determine outcomes, remained consistent throughout the story.

This conviction is deeply connected to the fact that he is not a Newtype but an Old Type. Winning through pure piloting skill rather than Newtype abilities or advanced computers — Def became the symbol of the end of the "Gundam era" and the dawn of the "pilot era."

The Greatest Moment — Last Shooting

Def's finest hour comes in the climactic final battle against Bosch. When it's revealed that Captain Bosch — their own squad leader — was the mastermind behind the incident, Def must confront him.

Bosch placed excessive faith in the pseudo-personality computer and his machine's performance, looking down on Def. But Def, relying neither on the computer's power nor on Gundam's power, cornered Bosch through his own piloting skill alone and delivered a magnificent last shooting.

The words he screamed in that moment are the most iconic line associated with F90:

"You say it's the computer's power, you say it's Gundam's power — this! THIS IS MY OWN POWER!!!"

This cry distills Def's entire life — the trauma of his mother's rejection, the skills honed through MS racing, his defiance against pseudo-personality computers — into a single soul-shaking declaration. An Old Type seized victory through his own strength alone. In the entire Gundam franchise, there is perhaps no victory cry so exhilarating and yet so poignant.

The First Pilot on Record to Return Alive

Def is recorded in official documentation as the first Gundam pilot to survive and return aboard F90. From that point forward, F90 would continue returning its pilots safely across battles stretching all the way to the Jupiter Wars — and Def Stallion stood at the beginning of that legend.

Deployed Units — The Five F90s

Despite being a prototype, multiple F90 units were constructed. Each served a different role and followed a different fate.

Unit 1 (Tricolor / White-Blue Base)

• Installed OS: TYPE-A.R
• Primary Pilots: Def Stallion → Bergh Screde (Formula Wars)
• Operational Period: UC 0111 – UC 0136 and beyond

Clad in the orthodox "Gundam colors," Unit 1 was Def Stallion's beloved machine that fought across countless battlefields. Most remarkably, this unit remained in active service for over 25 years. This testifies to the exceptional maturity of its design as a miniaturized MS pioneer, and the Hardpoint System's ease of updating was a key factor in its longevity.

Unit 2 (Repainted Dark Blue / Originally White-Red-Blue)

• Installed OS: TYPE-C.A
• Primary Pilots: Sid Amber → Patsy Angelica (FF)
• Fate: Captured by Oldsmobile → Modified for Mars Zeon → Recovered and rebuilt as F90II

Unit 2 was the machine that created the story's greatest turning point. On October 28, UC 0120, during a test flight in the Side 4 sector, it was seized by the Oldsmobile (Mars Independent Zeon Forces), along with its pilot Sid Amber. This incident propelled Def and his comrades into the Oldsmobile suppression campaign, setting the main plot in motion. After recovery, Unit 2 underwent major reconstruction with 60% new parts, reborn as Gundam F90II and becoming a test bed for the Bio-Computer.

Unit 3 (White Base Color)

• Installed OS: TYPE-K.B
• Operation: Purely experimental unit within SNRI research facilities
• Fate: Later converted into the Cluster Gundam

Unit 3, equipped with TYPE-K.B and its Newtype link capabilities, was used primarily for various tests within SNRI's research facilities. Though never deployed in combat, it was later converted into the Cluster Gundam through the incorporation of a Core Block System, receiving new life.

Unit 4 (Reserve Unit)

• Computer: Standard type (no pseudo-personality OS)
• Purpose: Spare parts supply unit

The unsung hero supporting the Experimental Corps. While lacking glamour, the fact that Unit 1 remained operational for over 25 years was likely made possible in part by Unit 4's existence.

Unit 5 (Mars Gundam)

• Origin: Reverse-engineered reproduction by Oldsmobile, later acquired by SNRI
• Color: White-Red base

This machine was manufactured by the enemy Oldsmobile through analysis of F90 technology and differs from legitimate F90 units in its origin. SNRI captured it and designated it as Unit 5. Its existence paradoxically proves that F90's design was excellent enough to be imitated by the enemy.

Variants — The Formula Lineage Branching from F90

Gundam F90II

An evolved variant built by extensively reconstructing Unit 2 with 60% new parts. The most significant change was the experimental installation of a Bio-Computer. From pseudo-personality computers to a Bio-Computer that directly interfaces with pilot brainwaves — F90II embodied the "intermediate stage" of evolution from F90 to F91. It supported new Mission Packs such as the I-Type and L-Type, maintaining Hardpoint System compatibility.

Gundam F90III

A further evolution based on Unit 3. The X-Type (Extra) Mission Pack was designed exclusively for this unit, featuring high-performance directional thrusters and combination weaponry for comprehensive combat enhancement.

Cluster Gundam

A modified version of Unit 3 incorporating a Core Block System. The Y-Type (Youngstar) Mission Pack's Core Fighter test data informed its design.

Gundam F91 — The Successor and Masterpiece

Developed based on F90 V-Type test data, F91 is the culmination of the Formula Project. The practical deployment of V.S.B.R., full-scale Bio-Computer integration, and implementation of MEPE (Metal Peel-off Effect, or "afterimages with mass") — numerous technologies verified in F90 came to fruition in F91. Without F90, F91 could not exist. In that sense, F90 is rightfully called the "father" of F91.

Crossbone Gundam (F97)

A high-performance machine born on the extension of the Formula Project, configured for use by space pirates. The lineage of SNRI-manufactured MS that began with F90 was carried forward to the flagship unit of the Crossbone Vanguard in the UC 0130s.

F80 Gunraid

The mass-production adaptation of F90. This combat-deployment model maintained Hardpoint compatibility while achieving cost reduction, representing the spread of F90's design philosophy to regular military units.

Design Secrets — The Gundam Born as F91's "Brother"

Born from Kunio Okawara's Rejected Designs

The design of Gundam F90 has a fascinating origin story.

In 1990, during the production of the film Mobile Suit Gundam F91, mechanical designer Kunio Okawara submitted multiple rough designs for the lead machine. His initial concept was an orthodox design that could be seen as a legitimate evolution of the RX-78-2 Gundam. However, director Yoshiyuki Tomino requested "something that breaks new ground, since this is a theatrical production — I want flows that previous Gundams haven't had," and F91's design progressed toward a more challenging direction — ultimately arriving at the revolutionary face design that "opens its mouth."

So what became of Okawara's rejected initial designs? Bandai's hobby division saw potential in this design line and spun it off as a model kit project — Mobile Suit Gundam F90. In other words, F90 entered the world as F91's "older brother."

A Project to Fill the Gap

There was another reason behind F90's creation. When Gundam F91, originally planned as a TV series, was changed to a theatrical film, a gap of roughly one year appeared in the Gundam franchise between April 1990 and the film's March 1991 premiere. Mobile Suit Gundam F90 was launched as a multimedia project spanning Famicom games, manga, and plastic models to fill this void.

Kunio Okawara's "26 Possibilities"

The Mission Pack designs originated from a memo titled "F90 Complete Test Program" created by project staff member Koichi Inoue, mapping equipment to all 26 letters of the alphabet. Kunio Okawara then drew the designs based on this framework. The concept of giving 26 different forms to a single machine was unprecedented even at the time — a groundbreaking approach that balanced plastic model product development with narrative depth.

When the "F90 A to Z PROJECT" realized the MG model kit treatment of all 26 types in 2019, Kunio Okawara himself provided full cooperation, and after approximately 30 years, every Mission Pack finally saw the light of day.

Story Appearances — The Battle Against Oldsmobile

The Famicom Game (1990)

Gundam F90's debut was the Famicom software Mobile Suit Gundam F90 (released 1990). Players piloted the F90 against the Oldsmobile forces in a simulation game. A Gundam making its first appearance through a video game was rare even then, making it a pioneering entry into Gundam history from non-visual media.

Manga Version: Mobile Suit Gundam F90

The manga depicts the Oldsmobile suppression campaign with Def Stallion as the protagonist.

On October 28, UC 0120, the 13th Experimental Corps, operating from the Ra Cailum-class battleship "Admiral Tianem," was conducting F90 test flights in the Side 4 sector. Suddenly, the Mars Independent Zeon Forces "Oldsmobile" attacked, and Unit 2 — along with pilot Sid Amber — was captured during testing.

With his comrade's machine stolen, Def launched in Unit 1. Eventually, it was revealed that Captain Bosch, their own squad commander, was the mastermind collaborating with Oldsmobile. In the end, Def defeated Bosch through his own piloting skill alone, delivering his iconic line — "THIS IS MY OWN POWER!!!" — and demonstrating Old Type pride.

Mobile Suit Gundam F90FF (Fastest Formula)

The recent manga F90FF depicts new adventures for F90. With Patsy Angelica appearing as Unit 2's pilot, the F90 story has expanded further. As a narrative that fills the gap between the UC 0112 competition and the UC 0120 incident, it adds new layers to F90's history.

Formula Wars 0122

In the Super Famicom game Mobile Suit Gundam F91: Formula Wars 0122, F90 Unit 1 reappears as Bergh Screde's machine. Inherited from Def, Unit 1 continues its active service under a new pilot.

Mobile Suit Gundam F90 Cluster

This work depicts the exploits of the Cluster Gundam, converted from Unit 3. It explores how F90's design philosophy evolved and was passed on to the next generation of machines.

Cultural Impact — Three Paths F90 Pioneered

1. Pioneer of the Miniaturized MS Movement

F90's greatest contribution to Universal Century history was proving the concept that "MS can be small yet powerful." Without F90's success, neither F91 nor V2 Gundam might have existed. From the UC 0120s onward, as the standard MS size shifted to the 15-meter class, F90 stood as the starting point of that tidal change.

2. Progenitor of Swap Systems

The concept of 26 Mission Packs became the wellspring for "swap systems" in later Gundam series:

• Strike Gundam's Striker Pack System (SEED)
• Impulse Gundam's Silhouette System (SEED DESTINY)
• Gundam AGE-1's Wear System (AGE)

All of these inherited F90's design philosophy of "base unit + purpose-specific external equipment." The concept F90 presented in 1990 has continued to influence Gundam series design language for over two decades.

3. Deep Ties with SD Gundam

The Famicom game in which F90 debuted had deep connections to the SD Gundam series. In 1990, SD Gundam was at the peak of its popularity, and F90's design consciously incorporated a "neat, orthodox Gundam face" that would look good in SD form. The ability to shine in both realistic proportions and SD was a testament to Kunio Okawara's design mastery.

Gunpla Guide — MG F90 and the A to Z PROJECT

MG 1/100 Gundam F90

The most important entry in Gundam F90's plastic model history is the MG (Master Grade) F90 that launched in 2019.

This kit's defining feature is its 11 hardpoints distributed across the body. By attaching separately sold Mission Packs, builders can recreate the in-universe swap system right in their hands. As a miniaturized MS, the MG-scale F90 is notably more compact than standard MG kits, which is part of its unique charm.

F90 A to Z PROJECT

Launched in April 2019, the "F90 A to Z PROJECT" was an ambitious undertaking to produce MG model kits of all 26 Mission Packs that Kunio Okawara had designed 30 years earlier. With Okawara's full cooperation, each pack was redesigned for modern standards based on original memos and early drafts. Mission Packs were released sequentially in two-pack sets, generating tremendous excitement among Gunpla fans for their collectibility.

Key MG Lineup

Building Tips

MG F90 has smaller parts than typical MG kits due to its miniaturized MS scale, requiring delicate work. The parts around hardpoints demand particular precision in fitting, and those who frequently swap Mission Packs should be careful about peg wear. On the other hand, its compact size means it takes up less display space, and the real joy of this kit lies in lining up multiple Mission Packs and enjoying the "dress-up" experience.

What F90 Asks — What Is "Power"?

The story of Gundam F90 continuously questions where "power" resides.

The pseudo-personality computer houses ace pilots' power within a machine. Mission Packs grant a single MS every conceivable form of power. Yet Def Stallion relied on neither. His final cry of "THIS IS MY OWN POWER!" was a declaration of faith in human ability, even in a Universal Century where technology never stops advancing.

And the F90 itself challenged the arms race of "bigger, higher-performance, more complex" with its answer of "smaller, simpler, yet stronger." This was also a return to the origin Yoshiyuki Tomino depicted in the original Gundam — that "MS are weapons."

This small Gundam, which began over 30 years ago as a Famicom game, has never been animated, yet through manga, games, and plastic models, it has left indelible footprints in Universal Century history and continues to captivate fans through the MG "A to Z PROJECT" to this day.

Related Articles

• Gundam F91 — Complete Guide
• Crossbone Gundam — Complete Guide
• Mobile Suit Gundam F91 — Complete Series Guide

Sources & References

• Manga: Mobile Suit Gundam F90 (Author: Rei Nakahara, Original Story: Yoshiyuki Tomino & Hajime Yatate)
• Manga: Mobile Suit Gundam F90FF (Author: Kiyoshi Imanoya, Art: Takayuki Torai)
• Famicom software: Mobile Suit Gundam F90 (Bandai, 1990)
• SFC software: Mobile Suit Gundam F91: Formula Wars 0122 (Bandai, 1991)
• "Gundam F90 (fictional weapon)" — Wikipedia (Japanese)
• "Gundam F90" — Gundam Wiki
• "Mission Pack" — Pixiv Encyclopedia
• "Def Stallion" — Pixiv Encyclopedia
• Bandai Hobby Site "F90 A to Z PROJECT"
• Kunio Okawara Art Collection IRON WORKS (1989)
• Monthly B-CLUB Issue 57 (Bandai, 1990)