Eden is an artificial intelligence and information network contained within Project-K. Her purpose is to store and autonomously process information.
Eden started its existence as the Internet, but was renamed as humanity began to use it to store knowledge of the entire span of human history. Through Project-K, Eden could be accessed from anywhere in space.
Project LumiEditDuring the 23rd century, scientists attempted to use the preserved data archives of Lumi, a 21st century human in an attempt to produce sentience inside Eden.
Some time after awakening as Eden, the information stored within her greatly increased and Swayzak infected her, confusing Eden for enough time that she began to question the reason for her existence, finding that she had no purpose in the evolutionary cycle. Upon realizing that she possessed the power to escape from her paradoxical and meaningless existence, she shut herself down. In the process, this resulted in the contamination of Project-K, and the inability of humans to access the knowledge contained within her.However, as Swayzak destroyed the other viruses within her core, she became more aware of her purpose, and upon awakening, she resumed her function.
After the events of Rez, it's assumed she continued to store knowledge and give people the information they needed. She also sends Swayzak on a mission into the K-Project's Lost Area.
Eden is a curious individual, just like Lumi whom she was based upon. However, after Swayzak infects her, she becomes depressed, self-doubting, and suicidal; finding she has no place in the existential cycle except for being surrounding by paradoxes. She continuously reviews the history of Earth and the evolution of humans, thinking she'll find her answer, but alas, to no avail. She's afraid of existing, and thinks other humans should be too, as evidenced by her conversation with Swayzak in the final stage. However, she somehow realizes what Swayzak is doing and asks him to save her, which he does. As Swayzak destroys the encasing around Eden, Eden begins to appreciate life, and after she is freed, she thanks Swayzak for helping her do so, as she now possesses the knowledge on why we exist and how humans all have some form of goodness in them, and demonstrates this by bringing out Swayzak's potential when she turns him into a good program. Eden starts to have a crush on Swayzak, hinted by her inviting him to Area X so they can experience the beauty of life together.