Citrine

Citrine, is a supporting character in the Xenosaga series. She is a U.R.T.V. variant.

Episode II
Citrine is U.R.T.V. unit 668. She is the only female among the U.R.T.V. variants. As children, she introduces herself to Rubedo (Junior), Nigredo (Gaignun) and Albedo at the Yuriev Institute. They are surprised, having though the missing number in their sequence was dead. She claims the X-type females like herself are theoretically superior, causing Rubedo to become frustrated with her. In a later sequence she speaks with Nigredo alone, claiming their duty is to manage and subdue the violent nature of Rubedo, whom she calls the Red Dragon.