Celine Jules
You first encounter the sorceress Celine Jules in the town of Krosse, where she's fighting to obtain a treasure map. You meet her after talking with the King of Krosse and have no choice but to let her join your group. After completing the Krosse Cave task, you can decide whether or not you want her to remain.
Opera Vectra
Complete the Tournament of Arms in Lacquer and then return to the tavern in Hilton to trigger an event that officially introduces Opera, a mysterious three-eyed woman. Speak with the King of Krosse to learn more about her and gain access to the Mountain Palace, where you can add Opera to your party.
Ernest Raviede
Ernest is Opera's boyfriend and can only be recruited if Opera belongs to your group. Activating a private action in Arlia sends you to Shingo Forest, where you must defeat a minor boss to rescue Ernest. Recruiting Opera and Ernest limits your options on possible future recruits.
Ashton Anchors
Recruiting Opera and Ernest prohibits you from recruiting Ashton, a moody swordsman. To find Ashton, save the kidnapped children of Mars Village and then travel to the port of Hilton, where you'll encounter two people who lead you to Ashton in the Salva Mines.
Bowman Jeane
Following the Tournament of Arms, Bowman sends you on a quest to retrieve a rare herb from the Sanctuary of Linga. As reward, Bowman then takes you to Keith, who translates the Krosse Cave scrolls. Afterwards, Bowman asks to join your group.
Precis F. Newmann
You find Precis, an agile female fighter, in front of Bowman's Pharmacy in Linga or in her home in southern Linga. She refuses to join your party if you've already recruited Bowman. Likewise, Bowman won't join if you've already recruited Precis.
Dias Flac
You can only recruit Dias Flac if you're playing as Rena. A strong swordsman, Dias proves especially valuable early in the game, although you may find Bowman more effective as you progress through the story.
Leon D.S. Gehste
Leon the magician only becomes available if you're playing as Claude and you've already reached El Continent. You find Leon in the Lacquer Castle laboratory and must complete a mission to the Hoffman Ruins before he offers to join you.
Noel Chandler
Another magician, Noel resides in a small house behind a forest on planet Nede. He volunteers to join your group after you defeat the final monster in the Cave of Crimson Crystals.
Chisato Madison
While exploring the Cave of Crimson Crystals, you also encounter Chisato, a reporter for the Nede Chronicles who follows your every move. Track her down in Centropolis to recruit her.