Side 3

Lore & Background

In the Universal Century, humanity has spread into orbital space colonies known as Sides, each a self-contained habitat ringed by agricultural domes, residential blocks, and industrial sectors. Side 3 occupies a specific orbital position and, during the events of the One Year War, falls under the control of the Principality of Zeon. The colony's governance is led by the Zeon political establishment, with Deikun at its head, and it functions as the nerve center from which Zeon's military campaigns are planned and directed. Mobile suit development, fleet coordination, and strategic decisions all flow through Side 3's command structures during the war.

Char Aznable's family resides in Side 3, and his early life there—marked by his mother's illness, his sister Saytra's presence, and the rigid social hierarchies of Zeon's upper class—shapes his worldview before the war fully consumes him. The colony is not a war zone in the traditional sense; it is a place of relative calm and order, which makes the violence that erupts from it all the more jarring. The contrast between the sterile, well-lit corridors of Zeon's government buildings and the chaos of mobile suit combat in the void outside defines much of the original series' tension.

After the One Year War, Side 3's political status shifts as the Zeon government is dismantled, but the colony itself endures as part of the broader space-colony network. In later Universal Century entries, Side 3 appears as a backdrop to the ongoing tensions between former Zeon loyalists and the Federation, a reminder that the wounds of the war cut deep into the social fabric of every colony, not just the battlefields.

In Their Own Story

The evening shift at the agricultural dome in Sector 7 of Side 3 smells of hydroponic basil and recycled air. A young technician named Maren presses her forehead against the cold glass of the observation corridor, watching the colony's outer hull catch the last amber light of the sun. Somewhere beyond the hull, in the black, a Zeon Zaku's thrusters paint a brief blue streak against the stars. She doesn't flinch. She has stopped flinching. Her mother's medicine is in the drawer by the sink, three days' supply left. The news feed in the canteen this morning had called it 'a limited engagement.' Maren turns back to her console, recalibrates the nutrient flow, and whispers the one word she keeps repeating like a prayer: 'tomorrow.' Tomorrow they will still be here. Tomorrow the basil will still be green. Tomorrow, maybe, the streaks of blue will stop.

Reader's Guide

Side 3 is an orbital space colony, a massive artificial habitat suspended in Earth's orbit. Its physical layout follows the standard Side architecture: long cylindrical or ring-shaped residential and industrial sectors, agricultural domes for food production, and a central administrative complex housing the Zeon government. The colony is self-sustaining—air, water, and food are recycled or grown in place—and its population lives under artificial gravity generated by the colony's rotation.

Politically, during U.C. 0079, Side 3 is under Zeon control. The Principality's leadership, including Deikun and his cabinet, operates from here. Military command structures are embedded within the colony's infrastructure: mobile suit hangars, fleet coordination centers, and intelligence offices are integrated into the colony's sectors. This means that the war is not fought 'near' Side 3; it is fought 'from' Side 3. Every strategic decision, every fleet deployment, every mobile suit deployment originates in the corridors and command rooms of this colony.

The defining tension of Side 3 is the collision between civilian normalcy and military purpose. Residents go about their daily lives—work, school, commerce—while the colony simultaneously serves as a war machine. The technology that defines daily life (artificial gravity, atmospheric recycling, hydroponic agriculture) is the same technology that makes the colony a strategic asset: destroy the colony, and you destroy a population. That interdependence is the core of the conflict, and it is what makes the One Year War feel less like a battle and more like a slow, grinding catastrophe that swallows everyone, colonist and soldier alike.

Did You Know?

• Char Aznable's entire pre-war life, including his family's residence and his mother's illness, is set in Side 3, making the colony the emotional origin point for one of Gundam's most iconic characters.
• The Zeon government's decision to launch a full-scale war against the Earth Federation was made from Side 3, turning a space colony into the de facto command center of a galaxy-wide conflict.
• Side 3's architecture and daily life reflect the broader Universal Century setting: humanity lives in space colonies with artificial gravity, recycled atmospheres, and hydroponic agriculture, making the colony both a hom
• The contrast between Side 3's orderly, civilian-facing interior and the mobile-suit warfare raging in the void outside is a recurring visual and thematic motif throughout the original Mobile Suit Gundam series.