Did more bios for the new season, thanks to hinode's reminder. Yuki (G3) is still missing, but I haven't played enough of Grandia 3 to write his.
Here are: Gong (ShF), Largo (TotA), Sync (TotA), and Dinn (S5) - written when I was sleepy, so someone should grammar-check these (especially for missing words, I do that a lot when I'm sleepy).
The travelling monk Gong joins the Shining Force early in their adventure to stop the resurrection of the Dark Dragon. He provides his team with decent damage and middle-range healing so he can stand up as a useful all-around fighter. While not the strongest of the Force, Gong is always around to provide support from his ever-useful Mary Poppins-esque backpack, filled with useful camping items that can help him out in numerous situations, though most of which don't help much in a duel. He also seems to be the only person in the Shining Force universe who ever took the time to bring along bugspray.
Largo the Black Lion's had a rough time of it. He started out as Badaq, a loyal retainer to the Kingdom of Kimlasca, before the plight of royal family caused them to betray his loyalty. As a result, his wife Sylvia died and his daughter was taken from him. The stoic warrior joined the ranks of the God-Generals under Van Grants to get revenge, only to meet a tragic end to the very daughter he'd lost so many years ago.
But the Black Lion's tragic past won't stop him from seeing success in the Duelling League. An extremely tanky fighter, he has good health and durability with some resistance to Earth and Fire. He starts out with strong damage that only gets stronger once he's lowered down to 50% of his health. And if he's lowered to 25% health, look out for his hellish Brimstone Tempest, which is simply overkill all-around.
A lot of people in the Duelling League have long questioned the meaning behind their existance. Be it a question of their role in the future, the secret of their pasts, or their purpose for fighting. Sync the Tempest takes agonizing over such questions to a new level of obsession to which only a teenager from the suburbs who wears black eyeliner can compare. To be fair, despite Sync's appearance, he is actually quite young, being one of the replicas of the Fon Master of the Order of Lorelei. With a natural talent for Daathic Fonic Artes, Sync was given a position as a masked God-General and never given the chance to full the role of Fon Master. Embittered with his position as 'second place' to the other replicas, Sync took on a cruel and twisted persona, revelling in battle and tormenting his enemies before being stopped once and for all by Luke and the others.
As a duelist, Sync has some nasty tricks. Good speed, status, and increasingly good physical and magical damage make him a force to be reckoned with. Once he reaches 50% and 25% of his health, he can unleash his Mystic Artes Harrowing Gale and Akashic Torment to blow away his opponents.
The General of Sable, a small mountain town in the Queendom of Falena, Dinn is a serious and dedicated warrior. Fiercely loyal to his Lord Solis Raulbel, Dinn's primary duties are to keep a watch on the border between Queendom and the nearby antagonist country, the New Armes Kingdom. After he helped clear up an unusual case of mistaken identity between the Prince of Falena and a gang of bandits in the Sable region, Lord Solis sent Dinn to aid Prince Freyjadour's quest to restore his country. Upon the success of the mission, Dinn was able to return home and enjoy his new married life with Lord Solis' daughter, Salisha.
But don't think Dinn's gotten soft as a newlywed. A skilled master of his two-handed katana, Shams al-Zuha, Dinn can dish out some heavy damage for his field. And as the master of the Titan Rune, he can increase that damage for a nice finishing strike. Resistant to most elements, Dinn has the survivability to show that it's not just the Queen's Knights you'll have to deal with if you mess with Falena.
-Djinn
Couldn't post them using the /admin link, so I just put them here again...