A young man who belongs to a military organization called the Musketeers, later promoted to a special task force code-named ARMs. After a terrorist attack he finds himself burdened with great power. His weapon is an advanced bayonet.
Gentle Giant: He's tall and fierce-looking, and even more formidable in battle. But to ordinary people, he's actually surprisingly affable and level-headed. Just very reserved about the details of his background.
Homoerotic Subtext: With Billy, in the Western localization. It's less subtext and more text in the Japanese game.
Redemption Demotion: Kanon seems to stop being so awesomely powerful when she joins the party (at least until you unlock her later skills). Justified, as she took a tremendous amount of damage in a short time before joining the party and it's a miracle she's still alive at all, let alone being able to move. Also, she was overclocking her cybernetics in the first place (explaining her status as That One Boss), which she can't do afterwards.
Chekhov's Gunman: He is introduced a good long while before he becomes vastly important to the game's plot, although his giving Ashley a Guardian Medium and his "enter name" screen having a portrait are big clues.
A female inventor who helps the team with their technological needs. She becomes playable after a specific subquest, where it is revealed that she's actually the last of a race of vampire-like beings. A pair of robots fight for her.
The Chessmaster: He's pulling the strings behind everything. And we mean everything.
Heroic Sacrifice: Sacrifices himself along with his sister to stop the end of the world.
Necessary Evil: He formed both the heroes and the villains as a two-tiered plan to gather information as well as global resources in order to stop a sentientdimension from swallowing their world. The villains could use whatever tactics they wanted; and the heroes would be able to get the combined support of the world's governments who wanted them to stop the villains.
Xanatos Gambit: He pulls off a masterful gambit by creating both the heroes and the villains' organizations. Whichever side wins, Valeria will have united the whole world in pursuit of his true goal - the destruction of the Kuiper Belt. The world would NEVER have united in time to stop it without his creation of a threat. Of course, if ODESSA won, they'd stop the threat too.
Altaecia Rune Valeria
Irving's sister, who supports him unconditionally.
I Just Want to Be Normal: When Ashley meets her in the Memory Maze, Anastasia reveals she never asked to be the hero and greatly wished to be able to just go back home and talk about inane things with her friends.
The Paladin: Combines healing magic and physical attacks.
The Vamp: To Vinsfeld. Getting him to love her and allowing herself to be killed, just so that he can know the same anguish of loss as she did when Vinsfeld murdered her family.
A very tall man and the leader of Odessa's troops. He's prone to spouting cheesy lines and uses a windmill-like three-bladed claw as a weapon.
Anti-Villain/Friendly Enemy: For someone who fights you most of the times you meet him, Ptolomea is unfailingly respectful. When he finally meets his end, he honorably asks your group to see to the safety of his men.
A sentient alternate universe, that's looking to devour Filgaea. The discovery of it is what led to formation of Odessa, as an Unwitting Pawn organization to create a threat that would engender a movement with the capacity to mobilize the resources needed to drive it off or destroy it.
Alien Sky: Causes one called the "Stain Paradigm." First it makes the sky dark blue with flickering black, and then near the end of the game fills it with psychedelic purple patterns.
Big Bad: The closest thing the game has to a true one.