Shion Uzuki
Age:  22
Born:  T.C. 4745
Height:  163 cm (5'4")
Weight:  48 kg (106 lbs)

Chief Engineer of the KOS-MOS Project General Operation System Research Center, Vector Industries First R&D Division.

When the story opens, she is assigned on a twofold mission:  to assist in the investigation of a planetary disappearance which is somehow related to the "Zohar Project" - a plan developed jointly between the government and private industry - and to test KOS-MOS.

Her official title is Chief Engineer of the KOS-MOS Project General Operation System Research Center, Vector Industries First R&D Division.  Although 2 years younger than Allen, Shion is a year his senior in the corporate hierarchy of Vector.

Although she appears clumsy at times, she is actually quite athletic.  In particular, her high kicks are powerful enough to render a grown man unconscious.  She apparently also wields a jujitsu-like technique passed on from her grandfather, but unfortunately this skill does not appear in this episode.

She is equipped with a "simulated personality OS" to aid in communication, and though her speech conveys her role as an android in service to humans, her tendency to put logic and probability first makes her quite difficult to manage at times.

The name KOS-MOS is a general acronym to denote an anti-Gnosis tactical system.  It stands for "Kosmos Obey Strategic Multiple Operation Systems."

KOS-MOS
Age: 

A female, armored battle android developed by the interstellar conglomerate, Vector Industries.  
She is comprised entirely of mechanical parts, a rarity in a n age of advanced Realian technology.  "KOS-MOS" is not her personal name, but rather the name of the complete battle system designed to combat Gnosis.

Ziggurat 8
a.k.a. Ziggy
Age:  98 (looks about 30)
Born:  T.C. 4637
Height:  191 cm (6'3")
Weight:  ??

A combat cyborg assigned the task of recovering and protecting MOMO, the prototype 100-Series Observational Realian.

Instead of embracing the fact that he was once human, Ziggy is constantly tuning his body, eliminating his organic parts in order to erase his own existence and reduce himself from a "person" to a mere "object".

The last rank he held was captain of the 1875th Special Operations Command detachment of the Federation Police Bureau.

He is currently appropriated to the S.O.C.E. According to Federation law, upon death, an individual's body is designated as "public property", thus they are no longer able to control their own fates.  Perhaps this is why Ziggy considers himself simply equipment owned by the S.O.C.E.

His thinking is in direct contrast to MOMO, who longs to be human.  Ziggy constantly strives to turn himself completely into a machine through repeated tune-ups that eliminate his human parts, piece by piece.

His looks belie his extremely old age, and his advice gained from years of experience is both practical an precise.

His former name was Jan Sauer.

A prototype 100-Series Observational Realian (Synthetic human) developed to observe and contact Gnosis, an alien life form that can only be detected by a "special sense".  MOMO is short for Multiple Observative Mimetic Organicus.
She was created by Joachim Mizrahi, a scientist renowned throughout the galaxy, and his wife, Juli Mizrahi.

chaos
Age:  looks about 16
Height:  169 cm (5'7"
Weight:  53 kg (117 lbs)

A slender, young boy who appears 16 years old but whose true age is unknown.  His perpetually melancholic expression, as well as the depth and scope of his conversations, give the impression that he hails from a higher plane of existence.  His translucent blue eyes and silver hair are his particularly distinguishing features.
As he volunteers no information whatsoever about his past other than hi name, everything about him, including whether he even has any memory of his past, is unknown.

As he volunteers no information whatsoever about his past other than his name, everything about him, including whether he even has any memory of his past, is unknown.

His relationship with Matthews and the crew appears to go back for quite some time, and they all respect him highly.

His translucent blue eyes and silver hair are particularly notable features.

His hobby is collecting ancient text and literature, as well as ancient (relative to his time period) weapons.

The official records state that he was born in T.C. 4755 and is the adopted son of Gaignun Kukai.

One of the directors of the Kukai Foundation, a special organization based on Second Miltia (an autonomous state in the Galxay Federaion).

Despite his seemingly carefree attitude, Jr. is actually quite wise and will occasionally make statements, cutting right to the heart of things.