The Last to Join: Emeralda, Chu-Chu, Maria

Three of Xenogears' party members each break a rule the rest of the cast quietly obeys. One isn't a person — she's a colony of nanomachines that walked out of a four-thousand-year-old ruin wearing the shape of a small girl. One is a stuffed toy who swells into a walking repair bay for other people's war machines. And one is a gifted pilot who, on her own two feet, can't land a single hit.

Emeralda, Chu-Chu, and Maria are the last three to join, and they've always read as a set — the strange corner of a very large cast, tucked off to one side. They arrive late, from the edges of the world. They don't get the endgame Gears everyone else gets. And each one is built around a quirk the game never stops to explain. Here's who they are, why they belong together, and which of them actually earns a slot in your party.

Emeralda: the nanomachine kid who becomes the best fighter you'll ever bench

Emeralda isn't a person. She's a colony of nanomachines shaped like a child, built four thousand years before the story by Kim — Fei's Zeboim-era incarnation — who modelled her on Elly's genes. She is, in every way that matters, Kim and Elly's daughter by simulation. Kim made her in an age when people lived barely thirty years and carried inherited genetic damage, and he wanted her to be pure life: a body that could break that curse. When Miang, running the government, moved to seize his nanotech, Kim hid Emeralda instead. The soldiers came for her tank anyway, and her own nanomachines shut themselves down rather than be taken.

The party wakes her four thousand years later in the Ethos Dig Site, memory in fragments, unable to say a word. Krelian mines her for the technology, straps her into a Gear called Crescens, and posts her to guard the third Gate at Sargasso. You beat her there LATE GAME and she joins — the very last character to do so. She thinks Fei is her creator come back and spends most of the game calling him some version of "Fei's Kim." She calls the eighteen-year-old Elly an old lady. She wakes with the mind of a three-year-old and no surname — guides invented two over the years, but the director confirmed she was never meant to have one. She carries no weapon at all; she reshapes her own limbs and hair into a spike-crusher, a chakram, a hammer.

Then there's the sidequest almost nobody runs. Late in the game, an optional dungeon at the Lighthouse opens onto Zeboim ruins, and down there Emeralda finally grasps that Kim is long dead and grows up — child to adult woman, on the spot. She appears in adult form in the ending, so the game plainly treats this as canon. And adult Emeralda isn't just a nicer sprite: she has the highest stats in the game across the board, the best speed and strength in the cast, and Elly's entire elemental spell list on top of it. Skip that dungeon and you never meet the strongest on-foot fighter Xenogears has.

The practical version of that is one line: don't grind child Emeralda. Get her to adult form first, then feed her the experience.

Chu-Chu: the plush that grows into a Gear-mender

Chu-Chu looks like a toy. She belongs to a near-extinct species that was naturally enormous until Solaris shrank the whole race with a limiter five hundred years ago. Chu-Chu descends from the ones whose physical limiter was stripped out, which is why she alone can still grow huge. The survivors of her kind fled to Shevat and lived with Wiseman. She left them to go find a mate, drifting through human towns at night to stay clear of Solaris, and slipped into Bledavik disguised as a stuffed animal. Margie took a liking to the "toy" and carried her off — then Chu-Chu's weight slowed Margie's escape enough that both of them got caught and thrown into Fatima Castle together. She falls for Fei on sight and announces it out loud, to his visible alarm. You can even rename her the moment you meet her.

In battle she does something no one else in the game can. She has no Gear — she becomes one, growing to Gear size when the fight calls for it, and in that form she's the only character who can repair other Gears. She needs no fuel to do it. She can't bolt on an engine, a frame, or any Gear accessory, and she has no booster or special options; her giant stats simply scale off her normal ones. She and Maria are also the only two party members with no Deathblows whatsoever, which caps how much damage she can ever do.

Here's the honest read: the game built her a healer's body and then handed her nothing sharp to go with it. Even doubled, she misses a lot and hits soft, and by the time she joins, everyone around her is simply better at the job. Take Chu-Chu for the novelty and the occasional Gear patch-up, not because she'll carry a fight. She's the most charming member of the cast and the weakest, and both things are true at once.

Maria: the pilot who can't throw a punch and doesn't need to

Maria pilots the heaviest Gear. She's Isaac Balthasar's granddaughter and the daughter of Nikolai and Claudia Balthasar, born on the surface. About half a year after her birth, Solaris seized her father — a genius Gear engineer — and took Maria and her mother as hostages to force his work on their human-and-Gear fusion project. What her father did next is the darkest thing in this corner of the cast: he faked his wife's death and built Claudia's brain into the Gear Seibzehn so that Maria's own brainwaves could pilot it, then used that Gear to smuggle his eight-year-old daughter out of Solaris. Maria grows up a guardian of Shevat, flying the machine that holds what's left of her mother.

Her father comes back too, rebuilt into the enemy Gear Achtzehn, and leads an attack on Shevat. His anti-jamming field freezes every Gear in the sky except Seibzehn, and when Maria hesitates to fire on her own father, her parents' wills inside the machine override her and put the Graviton Cannon through Achtzehn themselves. It's a lot of grief loaded into one pilot — and worth noting she's the only playable character with no voice at all, credited to a staff member who recorded battle shouts and nothing else.

On foot, Maria is dead weight, and it's not close. No Deathblows means no real damage — she and Chu-Chu are the two exceptions in a cast built around them. But that misses where she's meant to be. In her Gear she's the opposite of dead weight: Seibzehn is one of the best Gears in the game, sitting just behind Fei's Xenogears alongside El-Stier and Crescens. It's a heavy bruiser that stomps the field with Robo Punch and Robo Kick once she hits the high forties, on top of a missile spread. Like Emeralda's Crescens, it was slated for an endgame upgrade that got cut before release. Give her an Ether Doubler and a couple of Speed Rings to offset the weight, and she hits like a truck. The rule with Maria is simple: she is the Gear. Field her while everyone's mounted, and bench her the moment the party climbs out.

What ties the three together

The pattern is easy to miss. Play once and these three read as odds and ends the game happened to hand you late. Line them up, though, and they're clearly one design idea, split three ways — the corner where Xenogears keeps every party member who doesn't fit its own template.

Everyone else in the party follows the same arc: a pilot, a Gear, and an endgame Omnigear that Gear grows into. This corner is where that arc falls apart. Two cut Omnigears live here — Crescens was meant to become El-Crescens, and Seibzehn had its own upgrade planned; both survive only as concept art. Chu-Chu never had a Gear to grow at all, because she is the Gear. And Emeralda can't reach an Omnigear on principle: she's a nanomachine construct, so she can't align with an Anima Relic the way the others do. Three party members, three different ways of falling outside the rule.

The smaller echoes rhyme too. Gear-healing is a two-character trick, and both live in this corner — Chu-Chu mends other Gears in her giant form, and Crescens quietly regenerates itself. The only two characters whose bodies transform are here as well: Emeralda grows up, Chu-Chu grows huge. The only two with no Deathblows are here: Chu-Chu and Maria. It's as if every leftover idea in the design got swept into the same three slots.

For fielding, the call is clear. Adult Emeralda stands with Fei, Citan, and Billy as the best fighters in the game on foot — she's the reason the Lighthouse detour is worth it. Maria earns her slot the instant she's in Seibzehn and loses it the instant she steps out. Chu-Chu is the one you bring for love, not results. Xenogears famously ran short on time in its back half, and this corner — the cut Gears, the arcs that stop early, the mechanics left unexplained — is where that shows most plainly. If you want to see the shape of the game that was almost finished, start here, with the three it didn't quite get to.

Common Questions

How do I get adult Emeralda?

In Xenogears, Emeralda grows up during an optional late-game dungeon at the Lighthouse, which opens onto Zeboim ruins beneath it. Take her down there and the transformation happens on its own. It's permanent, and she's shown in adult form in the ending, so it counts as canon — and it sharply raises her stat growth, so it's the single most worthwhile detour of the three.

Is Emeralda worth using?

Yes — as an adult she's one of the best characters in the game, in the same tier as Fei, Citan, and Billy. She has the top stats in the cast and Elly's full elemental spell list, so she covers physical and magic damage at once. Grow her up first; the child form is a placeholder by comparison.

Why can't Maria fight on foot?

She has no Deathblows — she and Chu-Chu are the only two characters who don't — so her on-foot damage never scales. That's by design, not a flaw to fix. Her value is entirely in Seibzehn, which is a top-tier Gear. Use her in Gear battles and swap her out whenever the party is on foot.

Is Chu-Chu good?

No, not really, and that's fine. She misses often and hits softly even in giant form, and her one genuine edge is being the only character who can heal other Gears. Bring her for the novelty and the occasional repair, not for fights that matter — by the time she joins, the rest of the cast outclasses her.

Which of their Gears is strongest?

Seibzehn and Crescens both rank near the top of the Gear list. Seibzehn is the heavy hitter — slow, but it lands the biggest single blows of the three. Crescens is the speed pick, fast and accurate but fragile. If I had to choose one for a hard fight, I'd take Seibzehn for the raw damage and let a faster party member set the pace.