The protagonist of the game, an orphan raised by his aunt and a troublemaker in school. He gets put in detention the day before summer vacation and finds a strange book in the library, which naturally transports him to Ivalice. Unlike Marche, Luso is much more adventurous and not especially eager to get back home, which is handy because he needs to fill his Grimoire end-to-end in order to return.
BFS: In the artwork. It's basically identical to Marche's, although unlike his Luso never actually gets his hands on it.
Character Development: If you pay attention to the things he says during sidequests, he gets much more sure of himself as time goes on.
Year Inside, Hour Outside: Luso literally can spend years—without aging—in Ivalice, but he wakes up in the library as though he'd just nodded off at the desk.
The leader of Clan Gully. When Luso lands in the middle of their hunt, Cid offers him the clan's protection so the kid won't be killed by a giant chicken-bowling ball hybrid. Cid is competent, world-wise, and good-natured, but he hasn't always been an innocuous clan leader.
Crutch Character: Appears as such in a few early missions. By the time he joins for real, he's just a Bangaa (job wise) with no unique abilities that can't gain easy JP or EXP via dispatch, and unlike Luso/Adelle, is not forced for any missions.
Death Is Not Permanent: In-story version. He swore himself to a Judge right after getting shot for leaving Khamja.
The Worf Effect: Combined with the aforementioned demotion to show how dangerous Khamja is.
Adelle the Cat AKA Adelaide
A notorious hunter with a reputation as a loner. She poaches a kill from Clan Gully, falls into a trap set by Cid and Luso later, and soon after that forces her way into the clan in the hope of more profitable ventures. Needless to say, it's a rocky relationship.
Action Girl: Starts as a Thief, a Fragile Speedster class that is good at combat. She's also been surviving by her wits for some years in a place that's full of monsters and ruffians.
Cry Cute: Near the ending, when she realizes Luso will have to go back to his own world soon.
Defeat Means Friendship: A very strange variant. The first time she meets with Clan Gully, she offers them her services, only to double-cross them at the last minute. Later, she attempts to do it again, only to end up double-crossed herself by them. After this, she basically forced them to include her in their clan.
Montblanc's younger brother and a Moogle bard who enlists Clan Gully's help in procuring materials for a splendid new musical instrument. He repays them by giving his services to Clan Gully and composes a song about Luso.
Ascended Extra: Hurdy was just an unimportant Moogle Sibling in Final Fantasy XII. Here, he becomes an important playable character complete with a sweet-looking appearance makeover.
The Chick: A male version. He's not initially geared for physical combat and is much more concerned with the emotional state of the clan than loot and things.
A former Blademaster who roamed Jylland with her partner Luc Sardac. She was renowned for her swordfighting skills. Unfortunately, she seems to be in less than stellar condition these days. Namely, she's a zombie.
Badass: It is well worth it to get her on your team.
Saying it's worth it is an understatement. She comes in the Paladin class (which has good all around stats , except for speed, and great defenses), she has an increased attack stat which other than her only Luso has, she comes with the Dual Wield ability pre-learned and comes with two decent weapons of her own. If you want to fix the speed problem you can always turn her into a thief or, later, a ninja, she will still be a badass.
The Big Guy: A very powerful physical attacker and defender.
Determinator: Subconsciously.She refused to die and remained in the world as a zombie.
Driven by Envy: It turns out Luc Sardac poisoned her because he could not surpass her skill with the blade.
Dual Wielding: With swords. Yes, she does in fact start out with this skill, hence the Badass classification.
Lethal Joke Character: She can easily become this if you teach her Assassin skills, crippling units left and right with her dances before finishing them off with Last Breath. To say nothing of the sheer damage she can do by using Sword Dance with a Katana.
The man from Rozarria. His behavior towards the player characters is markedly different in this game than in Final Fantasy XII. He uses Luso and Clan Gully mainly as couriers. Everything is on a need-to-know basis, and Luso isn't on that list.
Overrated And Underleveled: You can't get him until after you beat the game, and even when you do, most of his abilities are useless or not very useful unless you have a lot of female units on the field.
He can't even change jobs. As the only unit with this restriction, this shoots his usefulness in the clan straight to the bottom. A pity; a Hume who wields guns could've been so useful.
The Computer Is a Cheating Bastard: When you fight him in one mission, he has the computer-only "Impervious" Support ability that makes him immune to all status. When he joins you, he doesn't have this ability any more. Indeed, he can't learn any Support abilities, thanks to his inability to class change.
Puzzle Boss: The first battle allows you to activate switches on the map to damage it, but this is pointless, as any party that can clear the previous fight is more than able to just kick its ass the old fashioned way, and it's even quicker that way too.
Oh Crap: A resounding this from Clan Gully when they meet it.
Khamja is a crime syndicate that operates out of Graszton. Officially, they build and sell ships. This is a from for a great many illegal activities committed across Jylland. Illua is their leader, Ewen is a high-ranking member and Cid is a former member.
Evil Poacher: Poaching is one of their operations. They use Carm Mercantile to identify rare monsters, though most of the latter's members are unaware of this.
Villain with Good Publicity: They are using the Karm Society, an organisation devoted to the protection of endangered species, as a cover.
Duelhorn is a crime syndicate from an unspecified distant land that seeks to extend its grip over Jylland. Technically, they are not a clan at first, calling themselves a "war-band," but acclimate to Jylland's culture pretty rapidly. Over the course of the game, rivalry with the much more villainous Khamja for control over Jylland leads them into an Enemy Mine situation with Clan Gully.
Anti-Villain: All except for Duke Snakeheart. Alys does not like harming innocents, and Maquis is motivated by a desire to one day end war. Even The Night Dancer gives candy to a crying kid who witnessed him fight another clan to force them to work for Duelhorn. The Night Dancer also seems to be looking for a challenge more than anything, and otherwise can be as kind and helpful as Alys to innocents.
Blood Knight: Duke Snakeheart deliberately reveals Duelhorn's plans to Clan Gully right after he and the other Four Bosses get off the boat just to provoke them into a battle for the fun of it.
Camp Gay: The Night Dancer. Note that it's more than him cross-dressing and acting flamboyantly: he can be affected by Al-Cid's special abilities that only work on women normally.
Enemy Mine: They will side with and occasionally call for Clan Gully's aid against Khamja, but they are still enemies in the end.
Expy: Duke Snakeheart seems very similar to Kefka in personality and also has similar eye markings.
I Fight for the Strongest Side: Subverted, villainous version. After the Four Bosses arrive, they split up and run around beating up smaller, weaker clans to force them to work for Duelhorn. Oddly enough, they seem to treat their forced converts pretty well afterwards, and none seems to grumble too much, so this trope is in play for their recruits.
Me's a Crowd: Maquis does this when you try to stop him from going on a suidical charge against Khamja. In fact, this capability is why he is know as the Phantasm.
Smug Snake: Duke Snakeheart. Out of all the leaders in the Duelhorn clan, Snakeheart fits the mold of this trope. He acts like everything goes according to plan and how he will never be beaten. Once he drops his facade and reveals that he was working to dismantle his clan against his fellow leaders so he can take over, he gets even more arrogant until you actually kill him, to which he uses his dying breath wondering why he is getting so cold.
A small, elite clan of four pursuing Klestia, the monster you encounter in your first battle, led by a Fighter named Bowen. You help them pursue their vengeance against the beast and also introduce them to Veis, an assassin who wishes to join them, teaching you her class in the process.
The Atoner: The clan warns Clan Gully not to pursue Klestia once wounded because a cornered beast is dangerous. They know this, because that's how Bowen lost his wife.
Bounty Hunters: Most of the missions you encounter them in outside of their subplot have them hunting down various fugitives from justice.
A clan/band of four Idol Singers — two Viera and two Gria. They have a large, popular following and even have two perpetual Fanboys following them around. They also happen to be pretty skilled warriors.
Action Girl: Every single one. During the Bonga Bugle mission where you try to interview them, thugs show up to try to kidnap the band. The editor promises that his assistants will protect them, but they counter that he's the one who most needs protection and attack the thugs first.
Luck-Based Mission: The "Kidnapped!?" mission revolves around trying to keep them out of water that their two fliers can close on in two turns, one of which you'll need just to get in range of them. You better hope your lock-down powers don't miss.
Meaningful Name: Subverted. They're pretty personable and nice. Only Lili lacks a friendly smile in her portrait.
Not What It Looks Like: Clan Gully gets this from Prima Donna in one mission. The four have skipped off to go take a bath, but forgot to tell their manager, who hired Clan Gully to find and rescue them from kidnappers. When the two groups meet, they mistake Clan Gully's motives.
A minor, all-Seeq clan based around Grazston who are Exactly What It Says on the Tin. You butt heads with them a few times over the game, and their leader, Lord Grayrl, will teach you the Viking class after one encounter.
Bandit Mook: Most of their units that aren't Vikings are Thieves.
Blatant Lies: Lord Grayrl will promise to stop his pirating ways if you spare his life. He doesn't.
Sore Loser: Most of the times you fight them, it's because they're peeved about losing the Auction to you.
Bangaa Brotherhood & Nu Mou Nobles
Two rival clans from neighboring villages in the Rupee Mountains that have had a violent feud for years and years. Both sides will post bills requesting aid in settling the score once and for all, and both sides pride their strengths (physical and mental, respectively) while denigrating their opponents corresponding weakness. The leaders of both factions will teach their jobs to you (Arcanist and Cannoneer) when you answer a bill requesting supplies.
Enemy Mine: You get hired by them at one point to defend them from pursuers. It turns out that the pursuers are your friends from House Bowen, and they are fleeing because they stole something.
The Highwayman: They will block a road in Camoa and demand a toll to pass until you beat them. Many other clans will do this too, but this is more or less explicitly this clan's "hat," and you have to fight them early in the main storyline.
A clan of profiteering tomb-raiders posing as legitimate archaeologists in the Kthili Sands area. You run into them a few times either in the act of stealing or in the act of fleeing from justice a few times.
Adventure Archaeologist: Subverted. They pose as researchers but make secret, illegal digs for goods to sell when no one is looking. In other words, they play this trope in a world that takes a much dimmer view on this sort of behavior than the trope's heyday.
Bandit Mook: They are pretty much all members of the Thief job or monsters.
Fake Charity: Like other rival clans, you can encounter them in their home turf and face the choice of paying 5,000 gil or fighting them. However, unlike most other clans that act outright as The Highwayman, the Surveyors instead ask for a charitable donation for research. If you pay up, they seem pleasantly surprised that you were such a sucker; if you don't, then they jump you.
Killed Off for Real: One of the rumors you can pick up in the game reveals that the entire clan was annihilated.
Multi-Mook Melee: There is a mission where you have to pick up some spilled gems before they can steal them all. They make no real effort to get the gems first, but you face an unlimited steam of replacement mooks, so there's not much point in fighting them.
An all-Bangaa clan of blacksmiths. They are just as good at using their weapons as they are at crafting them.
Berserk Button: Chita HATES it when his weapons are stolen, as a group of unfortunate Baknamy find out in one mission.