Sara

Sara is the protagonist and player character of Child of Eden. She's an antivirus program who is tasked with purifying the computer network Eden after it is infected by Swayzak as part of a self-espionage mission, and rescuing Lumi, who has been held captive. Sara wields her own version of the Lock-On Laser, as well as a weapon she crafted herself, called the Tracer.

Appearance
Sara is not seen physically in Child of Eden, except for her hands. However, she possibly appears on the cover to the game. From there, we see she is a blue humanoid figure with short dark blue or black hair and she is wearing a white shirt. She has broad shoulders.

Trivia

 * Sara is an unofficial name. The name was taken from the co-host of Toonami on Cartoon Network, who reviewed the original Rez in 2004. Since the review featured a cameo by Swayzak from Trapped in Hyperspace, who gave the protagonist of Rez his nickname, it's only natural that the protagonist of Child of Eden would be nicknamed after the other character in the review.
 * It is unknown what happens to Sara and why she didn't try to repel Swayzak's attack on the K-Project in the events of Rez. It's possible she forgot about Eden by that time.