Caretaker of Spacetime

Caretaker of Spacetime is the collective consciousness of the Universe. She is a seer who watches the balance of the world from within. She does not exist for ordinary people, but exist for those who are able to see them.

Appearance
She has an appearance remotely similar to C.C., if only in facial features and hair-do. Her hair has unnatural coloring impossible in a normal human being, even by the Code Geass universe standards.

Her outfit also features several instances of the Geass sigil, visible on their neck and as the shape of the top of their clothes.

Abilities
She is capable of interacting with a few select humans who have awareness of the Geass. She seems to mainly be an observer of events, but can and will take an active hand in things if the situation calls for it, such as when she teleports Ashley to kill Gene Smilas.

Quotes

 * (To Leila Malcal) "I'm nobody, to Humans, I do not exist. But, I'm visible to those who are able to see me."
 * (To Leila Malcal) "What am I, or we are is the collective consciousness of the Universe. I think that falls into your terminology. We intervene in the Evolution of Universe."
 * (To Leila Malcal) "The ultimate wish of any life, is to exist for all eternity. Yet termination is destined. They eventually vanish."
 * (To Leila Malcal) "The power you have, is a fragment of Geass. The power of Geass is far greater than what humans should possess. I insist that it should be taken back from them. I thought of humans as a defective form of life. That's why they shouldn't be allowed to touch or possess it. They'd better become extinct. But maybe you will be the one to disprove my opinion."
 * (To Gene Smilas) "Their faith in each other is admirable. Way more admirable than yours, Gene Smilas. You are the one who is going to die."

Trivia

 * The caretaker of space-time presents some similarities with the Truth of Fullmetal Alchemist : they're both enigmatic and metaphysical entities with an anthropomorphic manifestation which have a link with the power of their respective universe: namely alchemy and the geass. Finally, just like the Truth, the caretaker of space-time punishes the arrogants who go too far, thus breaking a certain balance (like the General Smilas).