Wong Fei Fong. Xenogears's main character; the fifth in a series of reincarnations of a boy on the Eldridge who saw the Wave Existance. While at an early age, he was discovered as the Contact, the one who was capable of meeting with the Wave Existance. Solaris subjected him to a series of tests, which resulted in Fei releasing his power and killing his mother Karen. He then became Id and worked with Grahf for many years before Khan managed to seal his Id personality and create a new one. This resulted in Fei having a severe case of Disassociative Identity Disorder. While in his "Fei" personality, Fei has no memories of his other selves, which may account for his generally cluelessness.

   Elhaym Van Houten. Like Fei, Elly is reincarnated through the ages, but she always ends up dying ^_^. In her current incarnation, she is the Fire member of Elements; supposedly a first-class citizen of Solaris, but actually half Lamb. Despite her position in the Solaris military, she sympathizes with the Lambs, much to the aggravation of her squadron. Elly eventually quits the Solaris military and joins with Fei. Near the end of the game, she is possessed by Miang.

   Citan Uzuki. First-class citizen of Solaris; his real name is Hyuga Ricdeau. While in the Elements, he joins with Sigurd to support Ramsus's rebellion against the Solaris class system. After leaving Elements, Emperor Cain assigns him as a "Guardian Angel" to watch over Fei to determine where he is a threat to the world. Citan eventually concludes that he is not, and sides with Fei. He speaks rather strangely; he never uses contractions and talks to himself a lot. Although he is allegedly a doctor, he never performs one act of medical treatment anywhere in the game.

   Bartholomew Fatima. Exiled prince of Aveh. When Bart was still young, his parents were killed by Shakhan in his military takeover. Bart fled with Sigurd, Margie, and Maison, and eventually turned to piracy to try to weaken Shakhan's hold on the country. Although he is outwardly brash and confident, he worries about whether he will be able to serve as king once Shakhan is defeated.

   Ricardo Banderas. A rather blatant rip-off of Blanka from Street Fighter, Rico is a demi-human who lives in Nortune, the capital of Kislev. He is the three-time champion of Battling, but chooses to remain in D Block and keep fighting rather than accept freedom. He is apparently the son of the Kaiser, but this is never really resolved, as the scene where it was supposed to be tied up was cut ;_;.

   Billy Lee Black. Son of Citan's and Sigurd's former comrade Jessiah Black, Billy would just as soon have no dealings with his father. He works for the -Ethos- as an Etone, an exorcist who destroys Wels. He never doubts his faith, at least until he discovers that the -Ethos- is actually just a front for Solaris. Protective of his sister Primera.

   Maria Balthasar. The daughter of Nikolai Balthasar, Maria was able to escape from Solaris in the Siebzehn at the cost of Nikolai's life. She then joined with Shevat and uses her Siebzehn to protect the city. Since she has no character development whatsoever, that's all there is to say about her.

   Chu-Chu. Chu-Chu seems to be a big ugly pink stuffed animal that Margie carries around -- except it's actually a big ugly pink living creature. Picture a cross between Pikachu and a Furby, except bright pink. She replaces any "oo" sounds ("you", "to", etc.) with "chu" when speaking, and seems to be in love with Fei o_O. When Achtzehn freezes all the Gears in Shevat, Chu-Chu comes to the party's rescue by using her "Big big churansformation" and turning into a giant Gear-sized Chu-Chu. She then joins the party.

   Emeralda Kasim. Fei's "daughter" Emeralda was created in the Zeboim era by his previous incarnation Kim. She is composed of tiny nanomachines that allow her to manipulate her body in strange ways (i.e., turn her hands into hammers to attack, etc.), and for this reason she was sought by Krelian. As a child, she talks in annoying Ayla-speak and refers to Fei as "Fei's Kim". Near the end of the game, she grows up and starts acting normally.