A resident of the resource satellite Heliopolis. He gets caught up in the Gundam seizure operation and ends up becoming the pilot of the Earth Alliance's secret weapon, the Strike Gundam. MECHA Strike Gundam - Strike An almighty machine capable of swapping equipment between three types: a standard mid-to-close range space combat spec, a melee combat spec equipped with a physical sword, and a bombardment spec equipped with a long-range cannon. Piloted by Kira. Model Number GAT-X105 - Aile Strike A mid-to-close range space combat spec featuring a high-thrust thruster unit and large variable wings. Model Number GAT-X105+AQM/E-X01 - Sword Strike A melee combat spec featuring the massive anti-ship sword "Schwert Gewehr" on its back. Model Number GAT-X105+AQM/E-X02 - Launcher Strike A bombardment spec with enhanced firepower, equipped with the ultra-high-speed impulse cannon "Agni" and vulcan guns. Model Number GAT-X105+AQM/E-X03 - Perfect Strike A fully armed spec equipped with the Multiple Assault Striker, which integrates the Aile, Sword, and Launcher equipment. Model Number GAT-X105+AQM/E-YM1 Freedom Gundam A ZAFT-made MS piloted by Kira. Its power source is not a conventional battery but a nuclear engine equipped with a Neutron Jammer Canceller. It features two beam cannons on its back and two railguns on its waist, possessing nearly invincible strength. Model Number ZGMF-X10A Meteor Enhanced armament for the Freedom and Justice. When not in use, it is docked at the bow of the Eternal.

Murrue Ramius Captain in the Earth Alliance. She originally came to Heliopolis as the Executive Officer of the new battleship Archangel, but became the acting captain after the original captain was killed in action. She places herself in battle to achieve peace, but possesses a compassionate and feminine side. Natarle Badgiruel Combat commander of the Archangel. Born into a military family, she has a typical military temperament where mission completion is the top priority. Her coolness sometimes saves everyone. Flay Allster A student at Heliopolis and the girl Kira has feelings for. A typical upper-class young lady type. Miriallia Haw Kira's friend. Caught up in the battle at Heliopolis, she takes refuge on the Archangel. She later works as an operator. A young girl. Tolle Koenig A student at the industrial college and Kira's classmate. A young boy. Sai Argyle A student at the industrial college and Kira's classmate. A young boy. Kuzzey Buskirk A student at the industrial college and Kira's classmate. A young boy. Arnold Neumann Earth Alliance soldier. Chief helmsman of the Archangel. Male. Dalida Lolah Chandra II Earth Alliance soldier. Communications officer of the Archangel. Male. Jackie Tonomura Earth Alliance soldier. CIC officer of the Archangel. Male. Romero Pal Earth Alliance soldier. Responsible for fire control on the Archangel. Male. Kojiro Murdoch A veteran crew member in charge of maintenance on the Archangel, which is mostly staffed by inexperienced recruits. He has a foul mouth but sure skills, and is deeply trusted by Mu and Kira. MECHA Archangel-class Assault Mobile Special Ship Archangel The Earth Alliance assault mobile special ship that Kira and the others board. A new type of ship secretly developed by the Atlantic Federation, it visited Heliopolis for the deployment of the Gundams. Model Number LCAM-01XA

The other protagonist. Kira's best friend and rival. He participates in the Gundam seizure operation and captures four out of the five Gundams. He becomes the pilot of one of them, the Aegis Gundam, and engages in fierce battles with Kira. A young boy. MECHA Aegis Gundam A machine with excellent high-speed combat capabilities in space and air. Its major feature is its ability to transform into a Mobile Armor, with a frame structure fundamentally different from the other four Gundams. Piloted by Athrun. Model Number GAT-X303 Justice Gundam The strongest MS created by ZAFT based on data from the captured GAT series. It is a sibling unit to the Freedom. Like the Freedom, it is equipped with a Neutron Jammer Canceller and features PS Armor that never fails. Piloted by Athrun. Model Number ZGMF-X09A Meteor Enhanced armament for the Freedom and Justice.

An ace MA pilot of the Earth Alliance. He joins the battle against ZAFT forces after being assigned to escort the Gundam delivery. Thereafter, he travels with Kira and the others, acting as a big brother figure. Male.

The daughter of Siegel Clyne, Chairman of the PLANT Supreme Council, she enjoys immense support as the Songstress of PLANT. Athrun is her fiancé, and she loves the Haro he gave her. A young girl.

A girl Kira met at Heliopolis. The daughter of Uzumi Nara Athha, the Representative of the neutral nation Orb. She has an incredibly active, almost reckless personality. A young girl.