C.C./Re;surrection

C.C. (シー・ツー), is one of the main characters of Code Geass: Lelouch of the Rebellion I — Initiation, Code Geass: Lelouch of the Rebellion II — Transgression, Code Geass: Lelouch of the Rebellion III — Glorification, and Code Geass: Lelouch the Re;surrection.

Code Geass: Lelouch the Re;surrection
It is revealed that out of loneliness, she brought Lelouch back to life, but the process was incomplete, and his body lacked his soul. Mirroring how Lelouch once took care of her when she had reverted to her slave girl self, she takes care of Lelouch in the hopes they can find a Thought Elevator so she can restore his memories.

As revealed in bonus material with movie admission released only in Japan, C.C. nearly gave up in despair on ever restoring Lelouch's memories. However, in his sleep, Lelouch said her real name, showing that even in his current state, part of him still remembered her. This gave her the motivation and resolve to keep going.

After Nunnally is saved, C.C. chooses to quietly depart. She is caught by Kallen, who gives her her Cheese-kun plushie. As she is walking away, Lelouch catches up to her, and she is still unimpressed by his lack of physical stamina. After the two have a short heated discussion about her just leaving after reviving him, she does not reject him coming with her, but retorts what would he even call himself if he did. When he responds with "L.L.", his way of a proposal, she is speechless in shock, before breaking into tears and smiling in joy. The two are later walking with the surge of refugees, holding hands and her true wish being fulfilled after so many years. She and Lelouch begin to hunt Geass users, and help those with good intentions and willpower to control the power, while eliminating those who wish to use it for malevolent purposes.

In the Picture Drama taking place ten years after the movie, she and Lelouch, now also known as L.L., are still hunting down Geass users. They allow themselves to be captured by a Geass-using pirate named Galonzo. She is shown to have opened up her emotions, and shamelessly flirted with Lelouch in front of Galonzo and his captives, and continued to do so afterwards. When the couple is attempting to figure out how to leave in the submarine, she further teases Lelouch for her amusement at his expense, saying she knocked the only remaining pirate who could help them escape because he tried to touch her hair, but the only person she would allow to touch her was Lelouch. After her share of fun, she asks him to assist her in piloting the submarine.

Code Geass: Lelouch of the Re;surrection / The Manga
It tells us an original story about what happened after the Code Geass RE manga. Similar to the movie but with key differences as well as new scenes.