Eve

イヴ

Eve is an artificial human created to be the first in a line of super soldiers. With her DNA fused with nanomachines, she possesses the ability to alter her body's shape and genetic makeup. She was raised to be emotionless, meaning that things considered normal are new to her.
In the anime, she first meets Sven and Train when Sven wants to save her, while Chronos sends Train to kill her and destroy all the research data used in her creation. Choosing to spare her life is one of the reasons Train leaves the organization. In the anime, her creator drives her berserk and orders her to attack Train. In the manga, Eve first encounters Train and Sven as they work as sweepers to capture Torneo Rudman (Train was never sent by Chronos in the manga). Sven and Train rescue her, and Train stops Toreno from causing Eve to go berserk. She then joins Sven and Train.
At the beginning of the anime series, Eve is wary of Train, claiming he smells like blood. She gives Train the bell he wears on his neck after reading that bells allow you to know where a bad cat is. In the manga, he already has his choker bell chain. They eventually develop into rivals over the position of being Sven's partner, and Train gives her the nickname "Little Princess".
Her hobby is reading books of varying degrees of difficulty. She can memorize any book she reads after reading it once, usually confusing the others by using complicated words she has learned, and her power to transform becomes more refined the more she learns.