Code Geass C.C.'s Abilities

C.C. has the power of the "Code", which renders her immortal, capable neither of aging nor of being killed by conventional means. She has been shot fatally a number of times, crushed by water pressure, burned at the stake, beheaded by a guillotine, and placed in an iron maiden, and each time she survived and eventually recovered. C.C. also has the ability to bestow people with the power of Geass, which manifests differently in each person but generally carries the ability to affect the minds of those it is used on in some way.

When touching another person, C.C. can afflict them with a hallucinatory experience (if need be) of chaotic and ominous images, pertaining in part to the memories of the target involved; the content varies with the afflicted. Physical contact, either direct or via a Knightmare Frame, may facilitate the process. Suzaku is shown images of his father (whom he murdered) as well as parts of C.C.'s memories, driving him into a panic. It tends to activate involuntarily at various points, such as when Lelouch's Geass becomes permanently active. This effect is described as 'a merging of consciousnesses'. The Geass sigil on her forehead glows whenever she manifests this power.

She is also able to cancel the effects of Geass from a person, this power being the reason she was being studied by Bartley Asprius. The only time she is seen using it however is when she releases Lelouch from his father's Geass. Bartley successfully copied this ability and from this created the Geass Canceler, which he then implanted into Jeremiah Gottwald. It is unknown whether this power manifests itself in any "Code" bearer or C.C. is a special case.

Apart from psionic abilities, C.C. is a capable leader, able to rescue Lelouch from Britannian traps, handle firearms with some proficiency, and seems to be a skilled unarmed fighter as well. She is also an accomplished Knightmare pilot, able to pilot both standard Knightmare Frames as well as copilot the Gawain with Lelouch. In the Picture Dramas, during a discussion with Kallen, she states that she has the ability to do almost anything but chooses to let others do it.

Geass
Before becoming immortal, C.C.'s Geass, as contracted with a nun during apparently medieval times, granted her the power "to be loved," which allowed her to make anyone love her unconditionally. She originally started with a Geass symbol in her left eye, but as the power matured, she eventually developed another in her right eye, and became unable to control it, causing everyone to love her except the nun. After she became bored by the entranced society around her, the nun who had bound the Geass contract to her forced her "Code" into C.C., as signified by the Geass sigil on the nun's forehead transferring to hers. The ordeal also burned a similarly-shaped scar under her left breast. The nun, freed of the "Code", dies, and C.C. takes up the "Code" and everything that goes with it: the loss of her original Geass, immortality, immunity to other Geass, and the ability to bestow Geass on others.