xenosaga I guide

KOS-MOS is an android build by a Vector Industries team spearheaded by Shion Uzuki. Although Shion is one of KOS-MOS' creators, the android still has secrets hidden within her constructed body and mind that even Shion cannot comprehend. Hidden abilities appear from time to time, surprising her creator, and even the android's reactions can be secretive and hard for anyone to anticipate or explain. Despite the mystery surrounding KOS-MOS, she is still a valuable addition to the party.
Built to fight the Gnosis, KOS-MOS is a good addition to any group having to deal with these mysterious foes. Her beam attacks are very strong, and her physical attacks are nothing to scoff at. She can take a lot of punishment as well, although her abilities with Ether are not quite as strong. KOS-MOS is incapable of piloting an A.G.W.S. unit.

xenosaga II guide

This blue-haired woman is actually an android created by Vector Industries to be used as a weapon primarily against the strange alien creatures known as the Gnosis. After the original version, created by Shion's fiancé Kevin, went out of control and killed a number of people--Kevin included--Shion helped to design and build the current version. While no more such incidents have occurred, this new design still seems at times to have a consciousness and functionality far beyond that which its creators anticipated.