The Black Knights are a group of
revolutionaries created by Lelouch (under the guise of Zero) in his campaign to overthrow
Britannia. He introduces the group to the world as an organization which protects those
without power from those who have it.
Under his leadership, the Black Knights grow in strength exponentially, becoming a
force rivaling the Britannian army. Ultimately, the Black Knights gain legitimacy
when the newly-formed United Federation of Nations contracts the Black Knights (organized
as a private military company) to become their military force.