Domon Kasshu is our main protagonist for this series, but he's not your typical hero-type.  While virtuous to the extent of having a sense of honor on the field of battle, he has a tendency to be harsh and blunt.  The inheritor of the "King of Hearts" legacy from his mentor, Master Asia, Domon is a great martial artist whose skill is only surpassed by his teacher and by the mysterious Neo-German, Schwarz Bruder.  Domon's main concern with the 13th Gundam Fight is not so much to win for the sake of his nation, but more to locate and destroy his brother Kyoji, who has escaped to Earth with the demonic looking Devil Gundam, and to free his father from stasis (Neo-Japan's military accused him of building a weapon to conquer mankind).  Helping Domon along the way in his quest is doctor/mechanic Rain Mikamura, who is also Domon's childhood friend.

The cocky Neo-American pilot of Gundam Maxter, Chibodee Crocket is the embodiment of the American dream for many of his fellow country men and women.  Orphaned as a child, he was left to fend for himself on the streets of New York with only his dream of reaching the colonies to keep him going.  He took up street fighting, and was eventually picked up by talent agents to become a champion boxer on the Neo-American colony.  Like many of the other Fighters, Chibodee adheres to a strict code of honor.  He plays fair and is not the type to nail someone in the back.  In relations with Domon and the others, Chibodee usually tries to keep up his macho image, but remains friendly overall...calling Domon "Japanese" and referring to George as "young master."  A crew of four young ladies serve as Chibodee's Gundam crew;  Janet, Bunny, Shirley and Cath.

Neo-China's bid for a chance to win the 13th Tournament, Sai is the energetic (read:HYPER) and mischievous representative of his family's Shaolin Temple.  Like Domon, Sai is one hell of a hand to hand combatant when it comes to martial arts, and although his size limits him in what he can do in the way of damage against those much larger than him (such as Argo), it does nothing to limit the amount of damage the Dragon Gundam can dish out.  Sai also possesses a knack for cooking, and likes to eat a lot, although from his size you could never tell!  Another honorable fighter, Sai is generally friendly towards the other pilots and likes to refer to the males as "big bro" and the females as "big sis."  He is, however, something of a little letch when it comes to looking at women!  Sai is helped out in his quest to win the Tournament and restore the Shaolin temple by a pair of badgering and elderly monks.

The only bishounen of the series, George de Sand is a French noble who believes in upholding the honor and dignity of his nation and family name at all costs.  He also has an undying loyalty to the Princess Maria Louise, although it's uncertain as to whether he's as much in love with her as she is with him.  And while the series doesn't actually confirm it, it can probably be assumed that George's parents died at some point, as the young man is already the head of his family at the age of 20, going on 21.  Much like Quatre from Gundam Wing, George was raised to be very proper, and is a talented musician as well as an excellent swordsman. When it comes to the other pilots, George can sometimes be a little aloof, but respects his fellow fighters as both opponents and at times, even comrades...sometimes referring to Chibodee, who he tends to work with on the occasion, as a "ruffian" in good humor.  George is assisted in his endeavors to win the tournament by his loyal butler Raymond Bishop, who was also his first fencing trainer.

A powerhouse of a man, Argo is a former space pirate who is participating in the tournament to preserve the lives of his fellow pirates in the Neo-Russian prisons.  By far the biggest and strongest of the five Shuffle inheritors, Argo is generally a quiet, contemplative individual who only speaks when he feels it's necessary.  It's even more a rarity to see him smile, but the the Neo-Russian is capable of showing emotion, and does seem to like the other five Shuffle inheritors through their camaraderie.  Unfortunately, Argo is also under constant surveillance by the Russian military, who act as his keepers, and a bomb strapped over his chest 24/7 is their way of keeping him loyal to what the government wants done.  This doesn't stop him from helping out his fellow pilots, however, even it means risking the chance he could be reduced to little more than a greasy smudge on the ground.  Argo is in the constant company of a militaristic woman named Nastasha, who is responsible for him while he's away from the prisons.

Domon's childhood friend, Rain is also the daughter of one of the scientists responsible for building the Shining and God Gundams, as well as being on the Ultimate Gundam project before it became Devil Gundam.  Rain handles both the repairs to the Shining Gundam when its been damaged, as well as Domon's injuries if he's injured.  A kind, caring young woman, she worries constantly about Domon.  Unfortunately, Domon often doesn't seem to show too much affection for her, but will usually come running to her rescue should anything happen to her.  Rain isn't to be underestimated because she's female, either.  While she's not as good of a fighter as the rest, she can still pilot the Shining Gundam in Domon's absence, and then later gets the Rising Gundam which she's able to handle better.

Appearing out of nowhere halfway through the first season of G Gundam, Schwarz Bruder becomes Domon's new guide and mentor in his quest to destroy the Devil Gundam when Master Asia turns traitor.  Very little is known about this masked man, but he is an excellent fighter who has no trouble giving Master Asia a tough time in battle.  He seems to have the abilities of the legendary ninjas, able to appear and disappear in silence, and often appearing where you would least expect him.  Unfortunately, his methods of instructing Domon are sometimes sneaky and harsh, often leaving the Neo-Japanese fighter very frustrated and angry.  But who is the man behind the mask?  And how does he know so much about the Devil Gundam??

Once the well respected King of Hearts, the Champion of the 12th Tournament and Domon's mentor, Master Asia has apparently turned his back on his student in order to ally himself with Kyoji and the Devil Gundam.  This reduces Domon to an emotional breakdown, as he is unable to comprehend why the man who was almost like a second father to him would do such a thing.  Master Asia keeps his reasons well hidden, however, but although he seems to have little regard for the lives of everyone else, he still seems to wish that Domon would quit his quest and take up a place at his side, again.  In the way of martial arts, Master Asia is matched by only one man until Domon is able to find himself enough to fight back properly....that man being Schwarz Bruder.

First appearing in episode 30, Allenby is the representative of Neo-Sweden with the Gundam that's reminiscent of Sailor Moon.  Her fighting style is similar to Domon's, which explains why the pair of them end up getting along right off and spend time training together.  Allenby is something of an experiment; a human being that has been subjected to tests of various kinds in order to make her the perfect fighter. The Nobel Gundam is capable of a berserker mode which can be turned on and off at will by the scientists overseeing Allenby's performance, and when in this rage mode, her fighting abilities can be increased to 125% of her normal skills.

The oldest son of the Kasshu family, Kyoji was an early influence in Domon's life, growing up.  He was also a scientist, working with his father on the Ultimate Gundam project.  Estimated to be 7-8 years Domon's senior, Kyoji was reported by the Neo-Japanese military as having stolen the Ultimate Gundam while Domon was away in training.  Little explanation is given as to why Kyoji apparently lost his mind and caused the death of his own mother when he refused to surrender to the military.  But one cannot help wonder why someone who had originally been so kind-hearted had suddenly gone mad...? 

(Note: Most of the Kyoji's stats have been left blank to keep spoiler info hidden.)