Delta

"So as you can see, this is what reality calls the Origin War. And it's all because of your father. Or your stepsister. Depending on who you want to blame. Cool, right?"

- Delta Delta is a mysterious entity who has observed the events of the Origin War from afar, revealed during Arc IV to be a former member of DATEA. Consequently, she is one of the few known survivors of the Doom of DATEA. Little else is known about her.

=Design and Overview=

Personality
The vision at the start of the Hallway of Origin described her as someone who had only been a member of DATEA due to "wanting to get rich off the others' fortunes".

Arc 3: Sphere Forest of the Periphery
Delta made an appearance towards the end of the arc, somehow giving the Tao King a direct method to observing the characters and events of the Origin War. She also attempted to explain away the strange nature of The Madara to him.

Arc IV: The Pathway of Origin
While not making an appearance, her name has been consistently brought up, both within flashbacks of DATEA and by Arturia Pendragon, who cited her as a potential threat to the multiverse.

Quotes

 * "Should be pretty obvious once you put all the pieces together."


 * "I should think it's simple. Just as the Key is using Madara, his will is using the Key. It's like a symbiotic relationship. The will defends the Key, and in return, the Key aids his will trying to find what it wants."


 * "Omega, listen. There's something I need to talk with you about."